Exact Match:
Synonyms:
- no synonyms found
Related Words:
- manhole
collapse - a hole (usually with a flush cover) through which a person can gain access to an underground structure related words >
- pinhole
collapse
- a small puncture that might have been made by a pin related words >
- knothole
collapse
- a hole in a board where a knot came out related words >
- keyhole
collapse
- the hole where a key is inserted related words >
- placket
collapse
- a piece of cloth sewn under an opening related words >
- eyelet
collapse
- a small hole (usually round and finished around the edges) in cloth or leather for the passage of a cord or hook or bar related words >
- gasket
collapse
- seal consisting of a ring for packing pistons or sealing a pipe joint related words >
- air hole,
- armhole,
- blowhole,
- bullet-hole,
- bunghole,
- cringle,
- deadeye,
- eye,
- eyelet,
- gland,
- grommet,
- guide,
- keyhole,
- knothole,
- loop,
- loophole,
- manhole,
- mousehole,
- packing,
- padding,
- peephole,
- pigeonhole,
- pinhole,
- placket,
- placket hole,
- porthole,
- punch-hole,
- spiracle,
- stopping,
- stuffing,
- tampon,
- tap,
- vent,
- venthole,
- wadding
- cranny
collapse
- a small opening or crevice (especially in a rock face or wall) related words >
- abysm,
- abyss,
- alcove,
- arroyo,
- asylum,
- bay,
- bezel,
- bolt-hole,
- box canyon,
- breach,
- break,
- cache,
- canyon,
- carrel,
- cavity,
- chamfer,
- chap,
- chase,
- chasm,
- check,
- chimney,
- chink,
- cleft,
- cleuch,
- clough,
- col,
- concealment,
- corner,
- corrugation,
- coulee,
- couloir,
- cove,
- cover,
- covert,
- coverture,
- crack,
- crevasse,
- crevice,
- cubby,
- cubbyhole,
- cubicle,
- cut,
- cwm,
- dado,
- dark corner,
- defile,
- dell,
- den,
- dike,
- ditch,
- donga,
- draw,
- dugout,
- engraving,
- excavation,
- fault,
- fissure,
- flaw,
- flume,
- flute,
- fluting,
- foxhole,
- fracture,
- funk hole,
- furrow,
- gap,
- gape,
- gash,
- gorge,
- gouge,
- groove,
- gulch,
- gulf,
- gully,
- hideaway,
- hideout,
- hidey hole,
- hiding,
- hiding place,
- hole,
- incision,
- joint,
- kloof,
- lair,
- leak,
- microgroove,
- moat,
- niche,
- nook,
- notch,
- nullah,
- opening,
- oriel,
- pass,
- passage,
- rabbet,
- ravine,
- recess,
- refuge,
- rent,
- retreat,
- rifling,
- rift,
- rime,
- roomlet,
- ruck,
- rupture,
- rut,
- sanctuary,
- scissure,
- score,
- scratch,
- seam,
- secret place,
- slit,
- slot,
- snuggery,
- split,
- stash,
- streak,
- stria,
- striation,
- sulcation,
- sulcus,
- trench,
- undercovert,
- valley,
- void,
- wadi,
- well-worn groove,
- wrinkle
- niche
collapse
- (ecology) the status of an organism within its environment and community (affecting its survival as a species)
- a position particularly well suited to the person who occupies it; "he found his niche in the academic world" related words >
- alcove,
- asylum,
- bay,
- bolt-hole,
- cache,
- carrel,
- concealment,
- corner,
- cove,
- cover,
- covert,
- coverture,
- cranny,
- cubby,
- cubbyhole,
- cubicle,
- dark corner,
- den,
- dugout,
- foxhole,
- funk hole,
- hideaway,
- hideout,
- hidey hole,
- hiding,
- hiding place,
- hole,
- hollow,
- inglenook,
- lair,
- nook,
- oriel,
- pitchhole,
- place,
- position,
- recess,
- recession,
- refuge,
- retreat,
- roomlet,
- sanctuary,
- secret place,
- slot,
- snuggery,
- stash,
- undercovert
- hiding place
collapse
- a place suitable for hiding something (such as yourself) related words >
- adytum,
- ashram,
- asylum,
- bolt-hole,
- cache,
- cell,
- cloister,
- concealment,
- corner,
- cover,
- covert,
- coverture,
- cranny,
- cubby,
- cubbyhole,
- dark corner,
- den,
- dugout,
- foxhole,
- funk hole,
- hermitage,
- hideaway,
- hideout,
- hidey hole,
- hiding,
- hole,
- holy of holies,
- ivory tower,
- lair,
- mew,
- niche,
- nook,
- privacy,
- recess,
- refuge,
- retreat,
- sanctuary,
- sanctum,
- sanctum sanctorum,
- secret place,
- stash,
- undercovert
- hideaway
collapse
- an area where you can be alone related words >
- adytum,
- ashram,
- asylum,
- bolt-hole,
- cache,
- cell,
- cloister,
- concealment,
- corner,
- cover,
- covert,
- coverture,
- cranny,
- cubby,
- cubbyhole,
- dark corner,
- den,
- dugout,
- foxhole,
- funk hole,
- hermitage,
- hideout,
- hidey hole,
- hiding,
- hiding place,
- hole,
- holy of holies,
- ivory tower,
- lair,
- mew,
- niche,
- nook,
- privacy,
- recess,
- refuge,
- retreat,
- safe haven,
- sanctuary,
- sanctum,
- sanctum sanctorum,
- secret place,
- stash,
- undercovert
- cubbyhole
collapse
- a small compartment related words >
- alcove,
- asylum,
- bay,
- bolt-hole,
- cache,
- carrel,
- concealment,
- corner,
- cove,
- cover,
- covert,
- coverture,
- cranny,
- cubby,
- cubicle,
- dark corner,
- den,
- doghouse,
- dugout,
- foxhole,
- funk hole,
- hideaway,
- hideout,
- hidey hole,
- hiding,
- hiding place,
- hole,
- lair,
- mousehole,
- niche,
- nook,
- oriel,
- pigeonhole,
- pinch,
- playhouse,
- recess,
- refuge,
- retreat,
- roomlet,
- sanctuary,
- secret place,
- snuggery,
- stash,
- tight spot,
- tight squeeze,
- undercovert
- hideout
collapse
- a hiding place; usually a remote place used by outlaws related words >
- adytum,
- ashram,
- asylum,
- bolt-hole,
- cache,
- cell,
- cloister,
- concealment,
- corner,
- cover,
- covert,
- coverture,
- cranny,
- cubby,
- cubbyhole,
- dark corner,
- den,
- dugout,
- foxhole,
- funk hole,
- haven,
- hermitage,
- hideaway,
- hidey hole,
- hiding,
- hiding place,
- hole,
- holy of holies,
- ivory tower,
- lair,
- mew,
- niche,
- nook,
- privacy,
- recess,
- refuge,
- retreat,
- rock pile,
- sanctuary,
- sanctum,
- sanctum sanctorum,
- secret place,
- shelter,
- stash,
- undercovert
- deadeye
collapse
- (nautical) a round hardwood disk with holes and a grooved perimeter used to tighten a shroud
- a dead shot related words >
- Nimrod,
- air hole,
- archer,
- armhole,
- artilleryman,
- blowhole,
- bowman,
- bullet-hole,
- bunghole,
- cannoneer,
- carabineer,
- crack shot,
- cringle,
- dead shot,
- eye,
- eyelet,
- gasket,
- good shot,
- grommet,
- guide,
- gun,
- gunman,
- gunner,
- hunter,
- keyhole,
- knothole,
- loop,
- loophole,
- manhole,
- marksman,
- markswoman,
- mousehole,
- musketeer,
- peephole,
- pigeonhole,
- pinhole,
- placket,
- placket hole,
- porthole,
- punch-hole,
- rifleman,
- sharpshooter,
- shooter,
- shot,
- sniper,
- spiracle,
- tap,
- targetshooter,
- toxophilite,
- trapshooter,
- vent,
- venthole
- cringle
collapse
- fastener consisting of a metal ring for lining a small hole to permit the attachment of cords or lines related words >
- air hole,
- armhole,
- blowhole,
- boltrope,
- bullet-hole,
- bunghole,
- canvas,
- clew,
- cloth,
- crowd of sail,
- deadeye,
- earing,
- eye,
- eyelet,
- foot,
- fore-and-aft sail,
- gasket,
- grommet,
- guide,
- head,
- keyhole,
- knothole,
- leech,
- loop,
- loophole,
- luff,
- manhole,
- mousehole,
- muslin,
- peephole,
- pigeonhole,
- pinhole,
- placket,
- placket hole,
- plain sail,
- porthole,
- press of sail,
- punch-hole,
- rag,
- reduced sail,
- reef point,
- reefed sail,
- sail,
- spiracle,
- square sail,
- tap,
- vent,
- venthole
- peephole
collapse
- a hole (in a door or an oven etc) through which you can peep related words >
- Texas tower,
- air hole,
- armhole,
- beacon,
- belvedere,
- bleachers,
- blowhole,
- bridge,
- bullet-hole,
- bunghole,
- conning tower,
- cringle,
- deadeye,
- eye,
- eyelet,
- gallery,
- gasket,
- gazebo,
- grandstand,
- grommet,
- guide,
- keyhole,
- knothole,
- lighthouse,
- lookout,
- loop,
- loophole,
- manhole,
- mousehole,
- observation post,
- observatory,
- outlook,
- overlook,
- peanut gallery,
- pharos,
- pigeonhole,
- pinhole,
- placket,
- placket hole,
- porthole,
- punch-hole,
- ringside,
- ringside seat,
- sighthole,
- spiracle,
- tap,
- top gallery,
- tower,
- vent,
- venthole,
- watchtower
- porthole
collapse
- a window in a ship or airplane related words >
- air hole,
- armhole,
- bay,
- bay window,
- blowhole,
- bow window,
- bullet-hole,
- bunghole,
- casement,
- casement window,
- cringle,
- deadeye,
- eye,
- eyelet,
- fan window,
- fanlight,
- gasket,
- grille,
- grommet,
- guide,
- keyhole,
- knothole,
- lancet window,
- lantern,
- lattice,
- light,
- loop,
- loophole,
- louver window,
- manhole,
- mousehole,
- oriel,
- pane,
- peephole,
- picture window,
- pigeonhole,
- pinhole,
- placket,
- placket hole,
- port,
- punch-hole,
- rose window,
- skylight,
- spiracle,
- tap,
- transom,
- vent,
- venthole,
- wicket,
- window,
- window bay,
- window glass,
- windowpane
- crevice
collapse
- a long narrow depression in a surface related words >
- abysm,
- abyss,
- arroyo,
- box canyon,
- breach,
- break,
- canyon,
- cavity,
- chap,
- chasm,
- check,
- chimney,
- chink,
- cleft,
- cleuch,
- clough,
- col,
- coulee,
- couloir,
- crack,
- cranny,
- crevasse,
- cut,
- cwm,
- defile,
- dell,
- dike,
- ditch,
- donga,
- draw,
- excavation,
- fault,
- fissure,
- flaw,
- flume,
- fracture,
- furrow,
- gap,
- gape,
- gash,
- gorge,
- groove,
- gulch,
- gulf,
- gully,
- hole,
- incision,
- joint,
- kloof,
- leak,
- moat,
- notch,
- nullah,
- opening,
- pass,
- passage,
- ravine,
- rent,
- rift,
- rime,
- rupture,
- scissure,
- seam,
- slit,
- slot,
- split,
- trench,
- valley,
- void,
- wadi
- abysm,
- abyss,
- arroyo,
- box canyon,
- breach,
- break,
- canyon,
- cavity,
- chap,
- chasm,
- check,
- chimney,
- chink,
- cleft,
- cleuch,
- clough,
- col,
- coulee,
- couloir,
- crack,
- cranny,
- crevasse,
- crevice,
- cut,
- cwm,
- defile,
- dell,
- dike,
- ditch,
- donga,
- draw,
- excavation,
- fault,
- fissure,
- flaw,
- flume,
- fracture,
- furrow,
- gap,
- gape,
- gash,
- gorge,
- groove,
- gulch,
- gulf,
- gully,
- hole,
- incision,
- joint,
- kloof,
- leak,
- moat,
- notch,
- nullah,
- opening,
- pass,
- passage,
- ravine,
- rent,
- rift,
- rime,
- rupture,
- seam,
- slit,
- slot,
- split,
- trench,
- valley,
- void,
- wadi
- spiracle
collapse
- a breathing orifice related words >
- air duct,
- air hole,
- air passage,
- air shaft,
- air tube,
- airway,
- armhole,
- avenue,
- blowhole,
- breathing hole,
- bullet-hole,
- bunghole,
- channel,
- chute,
- cringle,
- deadeye,
- debouch,
- door,
- egress,
- emunctory,
- escape,
- estuary,
- exhaust,
- exit,
- eye,
- eyelet,
- floodgate,
- flume,
- gasket,
- grommet,
- guide,
- keyhole,
- knothole,
- loop,
- loophole,
- louver,
- louverwork,
- manhole,
- mousehole,
- naris,
- nostril,
- opening,
- out,
- outcome,
- outfall,
- outgate,
- outgo,
- outlet,
- peephole,
- pigeonhole,
- pinhole,
- placket,
- placket hole,
- pore,
- port,
- porthole,
- punch-hole,
- sally port,
- shaft,
- sluice,
- spilehole,
- spout,
- tap,
- touchhole,
- transom,
- vent,
- ventage,
- venthole,
- ventiduct,
- ventilating shaft,
- ventilator,
- vomitory,
- way out,
- weir,
- wind tunnel
- blowhole
collapse
- the spiracle of a cetacean located far back on the skull related words >
- air duct,
- air hole,
- air passage,
- air shaft,
- air tube,
- airway,
- armhole,
- avenue,
- breathing hole,
- bullet-hole,
- bunghole,
- channel,
- chute,
- cringle,
- deadeye,
- debouch,
- door,
- egress,
- emunctory,
- escape,
- estuary,
- exhaust,
- exit,
- eye,
- eyelet,
- floodgate,
- flume,
- gasket,
- grommet,
- guide,
- keyhole,
- knothole,
- loop,
- loophole,
- louver,
- louverwork,
- manhole,
- mousehole,
- naris,
- nostril,
- opening,
- out,
- outcome,
- outfall,
- outgate,
- outgo,
- outlet,
- peephole,
- pigeonhole,
- pinhole,
- placket,
- placket hole,
- pore,
- port,
- porthole,
- punch-hole,
- sally port,
- shaft,
- sluice,
- spilehole,
- spiracle,
- spout,
- tap,
- touchhole,
- transom,
- vent,
- ventage,
- venthole,
- ventiduct,
- ventilating shaft,
- ventilator,
- vomitory,
- way out,
- weir,
- wind tunnel
- canyon
collapse
- a ravine formed by a river in an area with little rainfall related words >
- abysm,
- abyss,
- arroyo,
- box canyon,
- breach,
- break,
- cavity,
- chap,
- chasm,
- check,
- chimney,
- chink,
- cleft,
- cleuch,
- clough,
- col,
- coulee,
- couloir,
- crack,
- cranny,
- crevasse,
- crevice,
- cut,
- cwm,
- defile,
- dell,
- dike,
- ditch,
- donga,
- draw,
- excavation,
- fault,
- fissure,
- flaw,
- flume,
- fracture,
- furrow,
- gap,
- gape,
- gash,
- gill,
- gorge,
- groove,
- gulch,
- gulf,
- gully,
- hole,
- incision,
- joint,
- kloof,
- leak,
- moat,
- notch,
- nullah,
- opening,
- pass,
- passage,
- ravine,
- rent,
- rift,
- rime,
- rupture,
- scissure,
- seam,
- slit,
- slot,
- split,
- trench,
- valley,
- void,
- wadi
- air hole
collapse
- a hole that allows the passage of air related words >
- CAT,
- aerospace,
- aerosphere,
- air duct,
- air passage,
- air pocket,
- air shaft,
- air tube,
- airspace,
- airway,
- armhole,
- blowhole,
- breathing hole,
- bullet-hole,
- bump,
- bunghole,
- ceiling,
- cringle,
- crosswind,
- deadeye,
- empty space,
- eye,
- eyelet,
- favorable wind,
- fog,
- front,
- gasket,
- grommet,
- guide,
- head wind,
- high-pressure area,
- hole,
- ionosphere,
- jetstream,
- keyhole,
- knothole,
- loop,
- loophole,
- louver,
- louverwork,
- low-pressure area,
- manhole,
- mousehole,
- naris,
- nostril,
- overcast,
- peephole,
- pigeonhole,
- pinhole,
- placket,
- placket hole,
- pocket,
- porthole,
- punch-hole,
- roughness,
- shaft,
- soup,
- space,
- spilehole,
- spiracle,
- stratosphere,
- substratosphere,
- tail wind,
- tap,
- touchhole,
- transom,
- tropopause,
- troposphere,
- trough,
- turbulence,
- vent,
- ventage,
- venthole,
- ventiduct,
- ventilating shaft,
- ventilator,
- visibility,
- visibility zero,
- wind tunnel
- abysm,
- abyss,
- arroyo,
- box canyon,
- breach,
- break,
- canyon,
- cavity,
- chap,
- chasm,
- check,
- chimney,
- chink,
- cirque,
- cleft,
- cleuch,
- clough,
- col,
- combe,
- corrie,
- coulee,
- couloir,
- crack,
- cranny,
- crevasse,
- crevice,
- cut,
- defile,
- dell,
- dike,
- ditch,
- donga,
- draw,
- excavation,
- fault,
- fissure,
- flaw,
- flume,
- fracture,
- furrow,
- gap,
- gape,
- gash,
- gorge,
- groove,
- gulch,
- gulf,
- gully,
- hole,
- incision,
- joint,
- kloof,
- leak,
- moat,
- notch,
- nullah,
- opening,
- pass,
- passage,
- ravine,
- rent,
- rift,
- rime,
- rupture,
- scissure,
- seam,
- slit,
- slot,
- split,
- trench,
- valley,
- void,
- wadi
- crevasse
collapse
- a deep fissure related words >
- abysm,
- abyss,
- arroyo,
- box canyon,
- breach,
- break,
- chap,
- chasm,
- check,
- chimney,
- chink,
- cleft,
- cleuch,
- clough,
- col,
- coulee,
- couloir,
- crack,
- cranny,
- crater,
- crevice,
- cut,
- cwm,
- deep,
- defile,
- dell,
- depth,
- dike,
- ditch,
- donga,
- draw,
- excavation,
- fault,
- fissure,
- flaw,
- flume,
- fracture,
- furrow,
- gap,
- gape,
- gash,
- gorge,
- groove,
- gulch,
- gulf,
- gully,
- hole,
- hollow,
- incision,
- joint,
- kloof,
- leak,
- moat,
- notch,
- nullah,
- opening,
- pass,
- passage,
- pit,
- ravine,
- rent,
- rift,
- rime,
- rupture,
- scissure,
- seam,
- shaft,
- slit,
- slot,
- split,
- trench,
- valley,
- void,
- wadi,
- well,
- yawning abyss
- col
collapse
- a pass between mountain peaks related words >
- abysm,
- abyss,
- arroyo,
- box canyon,
- breach,
- break,
- canyon,
- cavity,
- chap,
- chasm,
- check,
- chimney,
- chine,
- chink,
- cleft,
- cleuch,
- clough,
- comb,
- coulee,
- couloir,
- crack,
- cranny,
- crevasse,
- crevice,
- cut,
- cwm,
- defile,
- dell,
- dike,
- ditch,
- donga,
- draw,
- esker,
- excavation,
- fault,
- fissure,
- flaw,
- flume,
- fracture,
- furrow,
- gap,
- gape,
- gash,
- gorge,
- groove,
- gulch,
- gulf,
- gully,
- hogback,
- hole,
- horseback,
- incision,
- joint,
- kame,
- kloof,
- leak,
- moat,
- notch,
- nullah,
- opening,
- pass,
- passage,
- ravine,
- rent,
- ridge,
- rift,
- rime,
- rupture,
- saddle,
- saddleback,
- scissure,
- seam,
- slit,
- slot,
- spine,
- split,
- trench,
- valley,
- void,
- wadi
- nook
collapse
- a sheltered and secluded place related words >
- L,
- alcove,
- angle,
- apex,
- asylum,
- bay,
- bend,
- bifurcation,
- bight,
- bolt-hole,
- cache,
- cant,
- carrel,
- cavity,
- chevron,
- coin,
- concealment,
- corner,
- cove,
- cover,
- covert,
- coverture,
- crack,
- crank,
- cranny,
- crevice,
- crook,
- crotchet,
- cubby,
- cubbyhole,
- cubicle,
- dark corner,
- deflection,
- den,
- dogleg,
- dugout,
- elbow,
- ell,
- fork,
- foxhole,
- funk hole,
- furcation,
- hideaway,
- hideout,
- hidey hole,
- hiding,
- hiding place,
- hole,
- hook,
- inflection,
- inglenook,
- knee,
- lair,
- nest,
- niche,
- opening,
- oriel,
- pitchhole,
- point,
- quoin,
- recess,
- recession,
- refuge,
- retreat,
- roomlet,
- sanctuary,
- secret place,
- snuggery,
- stash,
- swerve,
- undercovert,
- veer,
- vertex,
- zag,
- zig,
- zigzag
- dell
collapse
- a small wooded hollow related words >
- abysm,
- abyss,
- arroyo,
- bottom,
- bottom glade,
- bottoms,
- box canyon,
- breach,
- break,
- canyon,
- cavity,
- chap,
- chasm,
- check,
- chimney,
- chink,
- cleft,
- cleuch,
- clough,
- col,
- coulee,
- couloir,
- crack,
- cranny,
- crevasse,
- crevice,
- cut,
- cwm,
- dale,
- defile,
- dike,
- dingle,
- ditch,
- donga,
- draw,
- excavation,
- fault,
- fissure,
- flaw,
- flume,
- fracture,
- furrow,
- gap,
- gape,
- gash,
- gill,
- glen,
- gorge,
- groove,
- grove,
- gulch,
- gulf,
- gully,
- hole,
- incision,
- intervale,
- joint,
- kloof,
- leak,
- lunar rill,
- moat,
- notch,
- nullah,
- opening,
- pass,
- passage,
- ravine,
- rent,
- rift,
- rime,
- rupture,
- scissure,
- seam,
- slit,
- slot,
- split,
- strath,
- trench,
- trough,
- vale,
- valley,
- void,
- wadi
- asylum,
- bank,
- bolt-hole,
- bosom,
- bottle up,
- bundle away,
- bury,
- cache,
- coffer,
- conceal,
- concealment,
- corner,
- cover,
- covert,
- coverture,
- cranny,
- cubby,
- cubbyhole,
- dark corner,
- den,
- deposit,
- ditch,
- dugout,
- embosom,
- ensconce,
- file,
- file and forget,
- foxhole,
- funk hole,
- hide,
- hide away,
- hideaway,
- hideout,
- hidey hole,
- hiding,
- hiding place,
- hoard,
- hole,
- hutch,
- keep hidden,
- keep secret,
- lair,
- lay away,
- lay down,
- lay in,
- lay in store,
- lock up,
- lodge,
- niche,
- nook,
- pack away,
- plant,
- put away,
- recess,
- refuge,
- reposit,
- reservoir,
- retreat,
- salt away,
- salt down,
- sanctuary,
- screen,
- seal up,
- secret place,
- secrete,
- squirrel,
- store,
- store away,
- stow,
- stow away,
- stow down,
- undercovert,
- warehouse
- Jack Frost,
- abysm,
- abyss,
- arroyo,
- black frost,
- box canyon,
- breach,
- break,
- canyon,
- cavity,
- chap,
- chasm,
- check,
- chimney,
- chink,
- cleft,
- cleuch,
- clough,
- col,
- coulee,
- couloir,
- crack,
- cranny,
- crevasse,
- crevice,
- crust,
- cut,
- cwm,
- defile,
- dell,
- dike,
- ditch,
- donga,
- draw,
- encrust,
- excavation,
- fault,
- fissure,
- flaw,
- flume,
- fracture,
- frost,
- frost line,
- frost smoke,
- furrow,
- gap,
- gape,
- gash,
- gorge,
- groove,
- gulch,
- gulf,
- gully,
- hoar,
- hoarfrost,
- hole,
- incision,
- joint,
- killing frost,
- kloof,
- leak,
- moat,
- notch,
- nullah,
- opening,
- pass,
- passage,
- ravine,
- rent,
- rift,
- rime frost,
- rupture,
- scissure,
- seam,
- sharp frost,
- slit,
- slot,
- split,
- trench,
- valley,
- void,
- wadi,
- white frost
- ravine
collapse
- a deep narrow steep-sided valley (especially one formed by running water) related words >
- abysm,
- abyss,
- arroyo,
- bottom,
- bottom glade,
- bottoms,
- box canyon,
- breach,
- break,
- canyon,
- cavity,
- chap,
- chasm,
- check,
- chimney,
- chink,
- cleft,
- cleuch,
- clough,
- clove,
- col,
- coulee,
- couloir,
- crack,
- cranny,
- crevasse,
- crevice,
- cut,
- cwm,
- dale,
- defile,
- dell,
- dike,
- dingle,
- ditch,
- donga,
- draw,
- excavation,
- fault,
- fissure,
- flaw,
- flume,
- fracture,
- furrow,
- gap,
- gape,
- gash,
- gill,
- glen,
- gorge,
- groove,
- grove,
- gulch,
- gulf,
- gully,
- gutter,
- hole,
- incision,
- intervale,
- joint,
- kloof,
- leak,
- linn,
- lunar rill,
- moat,
- notch,
- nullah,
- opening,
- pass,
- passage,
- rent,
- rift,
- rime,
- rupture,
- scissure,
- seam,
- slit,
- slot,
- split,
- strath,
- trench,
- trough,
- vale,
- valley,
- void,
- wadi,
- wash
- asylum,
- back door,
- back stairs,
- back way,
- cache,
- concealment,
- corner,
- cover,
- covert,
- covert way,
- coverture,
- cranny,
- cubby,
- cubbyhole,
- dark corner,
- den,
- dugout,
- ejection seat,
- emergency exit,
- escalier derobe,
- escape hatch,
- escape route,
- fire escape,
- foxhole,
- funk hole,
- hideaway,
- hideout,
- hidey hole,
- hiding,
- hiding place,
- hole,
- inflatable slide,
- lair,
- life buoy,
- life net,
- life raft,
- lifeboat,
- lifeline,
- niche,
- nook,
- recess,
- refuge,
- retreat,
- sally port,
- sanctuary,
- secret exit,
- secret passage,
- secret place,
- secret staircase,
- side door,
- slide,
- stash,
- undercovert,
- underground,
- underground railroad,
- underground route
- valley
collapse
- a long depression in the surface of the land that usually contains a river related words >
- abysm,
- abyss,
- arroyo,
- bottom,
- bottom glade,
- bottoms,
- box canyon,
- breach,
- break,
- canyon,
- cavity,
- chap,
- chasm,
- check,
- chimney,
- chink,
- cirque,
- cleft,
- cleuch,
- clough,
- col,
- comb,
- combe,
- corrie,
- coulee,
- couloir,
- crack,
- cranny,
- crevasse,
- crevice,
- cut,
- cwm,
- dale,
- defile,
- dell,
- dike,
- dingle,
- ditch,
- donga,
- draw,
- excavation,
- fault,
- fissure,
- flaw,
- flume,
- fracture,
- furrow,
- gap,
- gape,
- gash,
- gill,
- glen,
- gorge,
- groove,
- grove,
- gulch,
- gulf,
- gully,
- hole,
- hollow,
- incision,
- intervale,
- joint,
- kloof,
- leak,
- lunar rill,
- moat,
- notch,
- nullah,
- opening,
- pass,
- passage,
- ravine,
- rent,
- rift,
- rime,
- rupture,
- scissure,
- seam,
- slit,
- slot,
- split,
- strath,
- trench,
- trough,
- vale,
- void,
- wadi
- air shaft
collapse
- a shaft for ventilation related words >
- wind tunnel
collapse
- a structure resembling a tunnel where air is blown at known velocities for testing parts of aircraft related words >
- louver
collapse
- one of a set of parallel slats in a door or window to admit air and reject rain related words >
- lair
collapse
- the habitation of wild animals related words >
- abri,
- adytum,
- antre,
- ashram,
- asylum,
- bolt-hole,
- bordello,
- brothel,
- bunker,
- burrow,
- cache,
- cathouse,
- cave,
- cavern,
- cell,
- clip joint,
- cloister,
- concealment,
- corner,
- couch,
- cove,
- cover,
- covert,
- coverture,
- cranny,
- cubby,
- cubbyhole,
- dark corner,
- den,
- den of thieves,
- dive,
- dugout,
- dump,
- earth,
- fleshpots,
- form,
- foxhole,
- funk hole,
- grot,
- grotto,
- gyp joint,
- hermitage,
- hideaway,
- hideout,
- hidey hole,
- hiding,
- hiding place,
- hole,
- hollow,
- holy of holies,
- ivory tower,
- joint,
- lodge,
- mew,
- nest,
- niche,
- nook,
- privacy,
- recess,
- refuge,
- retreat,
- run,
- sanctuary,
- sanctum,
- sanctum sanctorum,
- secret place,
- sewer,
- sporting house,
- stash,
- stews,
- subterrane,
- subway,
- tunnel,
- undercovert,
- warren,
- whorehouse
- concealment
collapse
- the activity of keeping something secret related words >
- abri,
- air-raid shelter,
- airtight secrecy,
- asylum,
- bolt-hole,
- bomb shelter,
- bombproof,
- bunker,
- cache,
- cave,
- close secrecy,
- closeness,
- corner,
- cover,
- covert,
- coverture,
- cranny,
- crypticness,
- cubby,
- cubbyhole,
- cyclone cellar,
- dark corner,
- den,
- disappearance,
- discreetness,
- discretion,
- dugout,
- earth,
- evasion,
- evasiveness,
- fallout shelter,
- foxhole,
- funk hole,
- hiddenness,
- hideaway,
- hideout,
- hidey hole,
- hiding,
- hiding place,
- hole,
- hugger-mugger,
- hugger-muggery,
- immateriality,
- imperceptibility,
- indiscernibility,
- invisibility,
- lair,
- niche,
- nonappearance,
- nook,
- recess,
- refuge,
- retreat,
- safety zone,
- sanctuary,
- secrecy,
- secret place,
- secretiveness,
- secretness,
- shelter,
- stash,
- storm cave,
- storm cellar,
- subterfuge,
- the dark,
- the invisible,
- the unseen,
- trench,
- uncommunicativeness,
- undercovert,
- unperceivability,
- unseeableness,
- unsubstantiality,
- viewlessness
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