Related Words:
- on the spot
collapse - without delay or immediately; "we hired her on the spot"; "thought they were going to shoot us down on the spot"
- at the place in question; there; "they were on the spot when it happened"; "it had to be decided by the man on the spot"
- in a difficult situation; "that question really put him on the spot" related words >
- PDQ,
- aboard,
- among us,
- apace,
- as of now,
- as things are,
- at once,
- at present,
- at this juncture,
- at this moment,
- at this point,
- at this time,
- between two fires,
- but now,
- cornered,
- cursory,
- decisively,
- directly,
- endangered,
- even now,
- expeditious,
- expeditiously,
- festinate,
- feverish,
- flying,
- for the nonce,
- for this occasion,
- forthwith,
- furious,
- hasty,
- here,
- here and now,
- hereabout,
- hereabouts,
- hereat,
- hereinto,
- hereto,
- hereunto,
- hic et nunc,
- hither,
- hitherward,
- hitherwards,
- hurried,
- immediate,
- immediately,
- imperiled,
- in Dutch,
- in a bind,
- in a fix,
- in a mess,
- in a pickle,
- in a predicament,
- in a scrape,
- in a spot,
- in danger,
- in deep water,
- in desperate case,
- in extremis,
- in jeopardy,
- in no time,
- in our time,
- in these days,
- in this place,
- in this vicinity,
- in trouble,
- instant,
- instantaneously,
- instanter,
- instantly,
- jeopardized,
- just here,
- just now,
- just then,
- last-minute,
- momentaneously,
- momentarily,
- momently,
- now,
- nowadays,
- on Queer Street,
- on board,
- on the dot,
- on the instant,
- on the nail,
- passing,
- pretty damned quick,
- prompt,
- promptly,
- pronto,
- quick,
- quickly,
- right away,
- right off,
- slap-bang,
- slapdash,
- smartly,
- snap,
- somewhere about,
- speedily,
- speedy,
- straightaway,
- straightway,
- subito,
- summarily,
- superficial,
- swift,
- swiftly,
- this day,
- this night,
- threatened,
- to this place,
- today,
- tonight,
- urgent,
- with all speed,
- with us,
- without delay,
- without further delay
- omen
collapse
- a sign of something about to happen; "he looked for an omen before going into battle" related words >
- actuarial prediction,
- adumbrate,
- adumbration,
- apocalypse,
- augur,
- augury,
- auspicate,
- auspice,
- betoken,
- betokening,
- betokenment,
- bode,
- boding,
- danger sign,
- early symptom,
- falling barometer,
- forebode,
- foreboding,
- forecast,
- forecasting,
- foreshadow,
- foreshadowing,
- foreshow,
- foreshowing,
- foresight,
- foretelling,
- foretoken,
- foretokening,
- forewarning,
- gathering clouds,
- guesswork,
- harbinger,
- have a hunch,
- have an intimation,
- high sign,
- improbability,
- indicant,
- indication,
- portend,
- portent,
- precursor,
- predict,
- prediction,
- prefiguration,
- prefigurement,
- prefiguring,
- preindication,
- preliminary sign,
- premonition,
- premonitory shiver,
- premonitory sign,
- premonitory symptom,
- presage,
- presaging,
- presentiment,
- preshowing,
- presignifying,
- probability,
- prodroma,
- prodrome,
- prognosis,
- prognostic,
- prognostication,
- promise,
- prophecy,
- prophesying,
- prospectus,
- quarantine flag,
- red flag,
- red light,
- shadow,
- shadow forth,
- sign,
- skull and crossbones,
- soothsay,
- speculation,
- statistical prediction,
- storm petrel,
- stormy petrel,
- symptom,
- thundercloud,
- thunderhead,
- token,
- tokening,
- type,
- vaticination,
- warning sign,
- warning signal,
- yellow flag,
- yellow jack
- dare
collapse
- a challenge to do something dangerous or foolhardy; "he could never refuse a dare"
- to be courageous enough to try or do something; "I don't dare call him", "she dares to dress differently from the others" related words >
- affront,
- aim to,
- assume,
- attempt,
- attempt to,
- battle cry,
- be a man,
- beard,
- bid defiance,
- bid to combat,
- brave,
- breast,
- bring before,
- bring forward,
- bring up,
- call out,
- cartel,
- challenge,
- chance,
- change,
- confront,
- confront with,
- court destruction,
- dare to,
- defi,
- defy,
- defy danger,
- deride,
- double dare,
- double-dare,
- encounter,
- envisage,
- face,
- face out,
- face up to,
- face with,
- forget the odds,
- front,
- gage,
- gage of battle,
- gamble,
- gauntlet,
- get fresh,
- get smart,
- glove,
- have a nerve,
- have the cheek,
- have the gall,
- have the guts,
- have the nerve,
- hazard,
- hold in contempt,
- lay before,
- make bold,
- make bold to,
- make free,
- meet,
- meet squarely,
- outdare,
- outface,
- place before,
- play with fire,
- present to,
- presume,
- pretend,
- pretend to,
- provocation,
- provoke,
- put it to,
- rebel yell,
- ridicule,
- risk,
- run the chance,
- run the risk,
- scream defiance,
- seek to,
- set before,
- show fight,
- stare down,
- stem,
- strive to,
- study to,
- stump,
- take a chance,
- take chances,
- take liberties,
- take the liberty,
- taunt,
- tempt Providence,
- try and,
- try to,
- ultimatum,
- venture,
- venture to,
- war cry,
- war whoop
- Cloudcuckooland,
- alto-cumulus,
- alto-stratus,
- angry clouds,
- anvil cloud,
- banner cloud,
- billowy cloud,
- black cat,
- black clouds,
- breakers ahead,
- broken mirror,
- cap cloud,
- cardhouse,
- cause for alarm,
- cirro-cumulus,
- cirro-fillum,
- cirro-nebula,
- cirro-stratus,
- cirro-velum,
- cirrus,
- cirrus cloud,
- cirrus haze,
- cirrus stripe,
- cloud,
- cloud band,
- cloud bank,
- cloud drift,
- cloud mass,
- cloud street,
- cloudland,
- cloudling,
- cloudscape,
- cocktail,
- cottony cloud,
- crisis,
- cumulo-cirro-stratus,
- cumulo-cirrus,
- cumulo-nimbus,
- cumulo-stratus,
- cumulus,
- cumulus cloud,
- curl cloud,
- danger,
- dangerous ground,
- emergency,
- endangerment,
- fleecy cloud,
- fractocumulus,
- gaping chasm,
- gathering clouds,
- halcyon bird,
- hazard,
- high fog,
- house of cards,
- imperilment,
- jeopardy,
- mackerel sky,
- mammatocumulus,
- menace,
- mushroom cloud,
- nimbus,
- nimbus cloud,
- owl,
- pass,
- peril,
- pinch,
- plight,
- predicament,
- quicksand,
- rain cloud,
- rainbow,
- raven,
- risk,
- rocks ahead,
- scud,
- shooting star,
- snail cloud,
- squall cloud,
- storm cloud,
- stormy petrel,
- strait,
- strato-cumulus,
- stratus,
- stratus cloud,
- thin ice,
- threat,
- thundercloud,
- thunderhead,
- water carrier,
- woolpack
- future
collapse
- bulk commodities bought or sold at an agreed price for delivery at a specified future date
- a verb tense that expresses actions or states in the future
- the time yet to come
- yet to be or coming; "some future historian will evaluate him"
- effective in or looking toward the future; "he was preparing for future employment opportunities"
- a verb tense or other formation referring to events or states that have not yet happened; "future auxiliary" related words >
- Friday,
- Friday the thirteenth,
- about to be,
- affianced,
- aftertime,
- afterward,
- already in sight,
- aorist,
- appointed lot,
- approaching,
- astral influences,
- astrology,
- at hand,
- betrothed,
- book of fate,
- brewing,
- bride-to-be,
- by-and-by,
- close,
- close at hand,
- coming,
- constellation,
- cup,
- desired,
- destinal,
- destination,
- destined,
- destiny,
- determined,
- dies funestis,
- doom,
- durative,
- emergent,
- end,
- eventual,
- expected,
- extrapolated,
- fatal,
- fatality,
- fate,
- fated,
- fatidic,
- fiance,
- fiancee,
- following,
- foredoom,
- forthcoming,
- fortune,
- future perfect,
- futuristic,
- gathering,
- going to happen,
- hereafter,
- historical present,
- hoped-for,
- ides of March,
- immediate,
- imminent,
- impendent,
- impending,
- imperfect,
- in danger imminent,
- in prospect,
- in reserve,
- in store,
- in the cards,
- in the offing,
- in the wind,
- in view,
- inevitability,
- instant,
- intended,
- kismet,
- later,
- looming,
- lot,
- lowering,
- lurking,
- menacing,
- moira,
- near,
- near at hand,
- nearing,
- offing,
- on the horizon,
- overhanging,
- past,
- past perfect,
- perfect,
- planets,
- planned,
- plotted,
- pluperfect,
- point tense,
- portion,
- predicted,
- preparing,
- present,
- present perfect,
- preterit,
- probable,
- progressive tense,
- projected,
- prophesied,
- prospective,
- stars,
- subsequent,
- tense,
- that will be,
- threatening,
- time to come,
- to come,
- to-be,
- tomorrow,
- ultimate,
- unborn,
- unlucky day,
- upcoming,
- waiting,
- weird,
- wheel of fortune,
- will of Heaven
- exposed
collapse
- not covered with clothing; "her exposed breast"
- with no protection or shield; "the exposed northeast frontier"; "open to the weather"; "an open wound" related words >
- aerial,
- aeriform,
- aery,
- airish,
- airlike,
- airy,
- alfresco,
- answerable for,
- apparent,
- apt to,
- atmospheric,
- bald,
- bare,
- bared,
- beholdable,
- belied,
- bleak,
- blown,
- breezy,
- capable of,
- clear,
- cleared,
- confounded,
- confuted,
- deflated,
- denied,
- denudated,
- denuded,
- dependent on,
- detectable,
- discarded,
- discernible,
- disclosed,
- discredited,
- dismissed,
- disproved,
- disputed,
- divested,
- ethereal,
- evident,
- exploded,
- exposed to,
- exposed to view,
- free,
- hanging out,
- impugned,
- in danger of,
- in evidence,
- in full view,
- in plain sight,
- in view,
- incident to,
- insight,
- invalidated,
- laid bare,
- liable,
- liable to,
- light,
- likely,
- likely to,
- manifest,
- naked,
- naked to,
- negated,
- negatived,
- nonimmune,
- noticeable,
- obliged to,
- obnoxious,
- observable,
- open,
- open as day,
- open to,
- open to all,
- open to view,
- open-air,
- outcropping,
- overt,
- overthrown,
- overturned,
- peeled,
- perceivable,
- perceptible,
- pneumatic,
- prone,
- prone to,
- punctured,
- raw,
- ready for,
- recognizable,
- refuted,
- rejected,
- responsible for,
- revealed,
- roomy,
- seeable,
- sensitive,
- showing,
- shown up,
- standing to,
- stripped,
- subject,
- subject to,
- susceptible,
- susceptive to,
- threatened,
- to be seen,
- tropospheric,
- unclassified,
- unclogged,
- unclosed,
- unclouded,
- unconcealed,
- uncovered,
- undisguised,
- unhidden,
- unobstructed,
- unrestricted,
- unstopped,
- unveiled,
- upset,
- viewable,
- visible,
- visual,
- wide-open,
- windblown,
- windswept,
- within range of,
- witnessable
- skull and crossbones
collapse
- emblem warning of danger or death related words >
- Azrael,
- Black Death,
- Death,
- Grim Reaper,
- Pale Death,
- Reaper,
- angel of death,
- armory,
- badge,
- badge of office,
- badges,
- baton,
- blazonry,
- brassard,
- button,
- cap and gown,
- chain,
- chain of office,
- class ring,
- cockade,
- collar,
- cross,
- crossbones,
- danger sign,
- decoration,
- dress,
- eagle,
- early symptom,
- emblems,
- ensigns,
- falling barometer,
- fasces,
- figurehead,
- fleur-de-lis,
- gathering clouds,
- hammer and sickle,
- heraldry,
- high sign,
- insignia,
- lapel pin,
- livery,
- mace,
- mantle,
- markings,
- medal,
- memento mori,
- mortarboard,
- old school tie,
- omen,
- pale horse,
- pale rider,
- pin,
- precursor,
- preliminary sign,
- premonitory sign,
- premonitory symptom,
- prodroma,
- prodrome,
- quarantine flag,
- red flag,
- red light,
- regalia,
- ring,
- rose,
- school ring,
- shamrock,
- sickle of Death,
- sigillography,
- skull,
- sphragistics,
- staff,
- storm petrel,
- stormy petrel,
- swastika,
- symptom,
- tartan,
- that fell sergeant,
- that grim ferryman,
- thistle,
- thundercloud,
- thunderhead,
- tie,
- uniform,
- verge,
- wand,
- warning sign,
- warning signal,
- white cross,
- yellow flag,
- yellow jack
- susceptible
collapse
- (often followed by `of' or `to') yielding readily to or capable of; "susceptible to colds"; "susceptible of proof"
- easily impressed emotionally related words >
- accessible,
- adaptable,
- affected,
- alive to,
- amenable,
- answerable for,
- apt,
- apt to,
- aroused,
- aware,
- bendable,
- bending,
- bright,
- capable of,
- clever,
- cognizant,
- compliant,
- conscious,
- delicate,
- dependent on,
- disposed,
- docile,
- ductile,
- educable,
- elastic,
- emotionable,
- exposed,
- exposed to,
- extensible,
- extensile,
- fabricable,
- facile,
- fictile,
- flexible,
- flexile,
- flexuous,
- formable,
- formative,
- giving,
- gullible,
- impressed,
- impressible,
- impressionable,
- impressive,
- in danger of,
- incident to,
- inclined,
- influenceable,
- influenced,
- instructable,
- intelligent,
- liable,
- liable to,
- like putty,
- likely to,
- limber,
- lissome,
- lithe,
- lithesome,
- malleable,
- moldable,
- motivated,
- movable,
- naive,
- naked,
- naked to,
- nonimmune,
- nonresistant,
- obliged to,
- obnoxious,
- open,
- open to,
- open-minded,
- passible,
- perceptive,
- persuadable,
- persuasible,
- pervious,
- plastic,
- pliable,
- pliant,
- predisposed,
- prone,
- prone to,
- quick,
- ready,
- ready for,
- receptive,
- responsible for,
- responsive,
- ripe for instruction,
- roused,
- schoolable,
- sensible,
- sensile,
- sensitive,
- sensitive to,
- sentient,
- sequacious,
- shapable,
- soft,
- softhearted,
- springy,
- standing to,
- stirred,
- suasible,
- subject,
- subject to,
- submissive,
- suggestible,
- supple,
- susceptive,
- susceptive to,
- swayable,
- swayed,
- sympathetic,
- teachable,
- tender,
- tenderhearted,
- thirsty for knowledge,
- touched,
- tractable,
- tractile,
- trainable,
- warmhearted,
- weak,
- whippy,
- willing,
- willowy,
- within range of,
- yielding
- Cloudcuckooland,
- alto-cumulus,
- alto-stratus,
- angry clouds,
- anvil cloud,
- banner cloud,
- billowy cloud,
- black cat,
- black clouds,
- broken mirror,
- cap cloud,
- cirro-cumulus,
- cirro-fillum,
- cirro-nebula,
- cirro-stratus,
- cirro-velum,
- cirrus,
- cirrus cloud,
- cirrus haze,
- cirrus stripe,
- cloud,
- cloud band,
- cloud bank,
- cloud drift,
- cloud mass,
- cloud street,
- cloudland,
- cloudling,
- cloudscape,
- cocktail,
- cottony cloud,
- cumulo-cirro-stratus,
- cumulo-cirrus,
- cumulo-nimbus,
- cumulo-stratus,
- cumulus,
- cumulus cloud,
- curl cloud,
- danger sign,
- early symptom,
- falling barometer,
- fleecy cloud,
- fractocumulus,
- gathering clouds,
- halcyon bird,
- high fog,
- high sign,
- mackerel sky,
- mammatocumulus,
- mushroom cloud,
- nimbus,
- nimbus cloud,
- omen,
- owl,
- precursor,
- preliminary sign,
- premonitory sign,
- premonitory symptom,
- prodroma,
- prodrome,
- quarantine flag,
- rain cloud,
- rainbow,
- raven,
- red flag,
- red light,
- scud,
- shooting star,
- skull and crossbones,
- snail cloud,
- squall cloud,
- storm cloud,
- storm clouds,
- storm petrel,
- stormy petrel,
- strato-cumulus,
- stratus,
- stratus cloud,
- symptom,
- thunderhead,
- warning sign,
- warning signal,
- water carrier,
- woolpack,
- yellow flag,
- yellow jack
- prone
collapse
- lying face downward
- having a tendency (to); often used in combination; "a child prone to mischief"; "failure-prone" related words >
- accumbent,
- acquiescent,
- agreeable,
- alacritous,
- amenable,
- answerable for,
- apt,
- apt to,
- ardent,
- bent,
- calculated to,
- capable of,
- compliant,
- consenting,
- content,
- cooperative,
- couchant,
- couche,
- crawling,
- crouched,
- crouching,
- debased,
- decumbent,
- deferential,
- dependent on,
- depressed,
- disposed,
- disposed to,
- dispositioned,
- docile,
- draped,
- eager,
- enthusiastic,
- exposed,
- exposed to,
- fain,
- favorable,
- favorably disposed,
- favorably inclined,
- flat,
- forward,
- game,
- given,
- given to,
- groveling,
- horizontal,
- in danger of,
- in the mind,
- in the mood,
- incident to,
- inclined,
- inclined to,
- knee-high,
- knocked flat,
- laid low,
- leaning,
- level,
- liable,
- liable to,
- likely,
- likely to,
- lolling,
- lounging,
- low,
- low-built,
- low-hung,
- low-level,
- low-leveled,
- low-lying,
- low-set,
- low-statured,
- lying,
- lying down,
- minded,
- minded to,
- naked to,
- neap,
- obeisant,
- obliged to,
- obnoxious,
- obsequious,
- on bended knee,
- open,
- open to,
- pliant,
- predisposed,
- predisposed to,
- procumbent,
- prompt,
- prone to,
- prostrate,
- quick,
- ready,
- ready and willing,
- ready for,
- ready to,
- receptive,
- reclining,
- recumbent,
- reposing,
- responsible for,
- responsive,
- resupine,
- runty,
- sensitive,
- servile,
- short,
- sprawled,
- sprawling,
- spread,
- squat,
- squatty,
- standing to,
- stooped,
- stumpy,
- subject,
- subject to,
- subservient,
- supine,
- susceptible,
- susceptive to,
- tending,
- tractable,
- unelevated,
- well-disposed,
- well-inclined,
- willed,
- willing,
- willinghearted,
- within range of,
- zealous
- quicksand
collapse
- a pit filled with loose wet sand into which objects are sucked down
- a treacherous situation that tends to entrap and destroy related words >
- baygall,
- bind,
- bog,
- bottom,
- bottomland,
- bottoms,
- breakers ahead,
- buffalo wallow,
- cardhouse,
- cause for alarm,
- clutch,
- complication,
- coral heads,
- crisis,
- crunch,
- danger,
- dangerous ground,
- embarrassing position,
- embarrassment,
- emergency,
- endangerment,
- everglade,
- fen,
- fenland,
- fine how-do-you-do,
- gaping chasm,
- gathering clouds,
- glade,
- hazard,
- hell to pay,
- hobble,
- hog wallow,
- holm,
- hot water,
- house of cards,
- how-do-you-do,
- imbroglio,
- imperilment,
- ironbound coast,
- jam,
- jeopardy,
- ledges,
- lee shore,
- marais,
- marish,
- marsh,
- marshland,
- meadow,
- menace,
- mere,
- mess,
- mire,
- mix,
- moor,
- moorland,
- morass,
- moss,
- mud,
- mud flat,
- parlous straits,
- pass,
- peat bog,
- peril,
- pickle,
- pinch,
- pitfall,
- plight,
- predicament,
- pretty pass,
- pretty pickle,
- pretty predicament,
- quagmire,
- quicksands,
- risk,
- rockbound coast,
- rocks,
- rocks ahead,
- salt marsh,
- sandbank,
- sandbar,
- sands,
- scrape,
- shallows,
- shoals,
- slob land,
- slough,
- sough,
- spot,
- squeeze,
- stew,
- sticky wicket,
- storm clouds,
- strait,
- straits,
- sump,
- swale,
- swamp,
- swampland,
- taiga,
- thin ice,
- threat,
- tight spot,
- tight squeeze,
- tightrope,
- tricky spot,
- undercurrent,
- undertow,
- unholy mess,
- wallow,
- wash
- red flag
collapse
- something that irritates or demands immediate action; "doing that is like waving a red flag in front of a bull"
- the emblem of socialist revolution
- a flag that serves as a warning signal; "we didn't swim at the beach because the red flag was up" related words >
- Roman candle,
- aid to navigation,
- alarm,
- amber light,
- balefire,
- beacon,
- beacon fire,
- bell,
- bell buoy,
- blinker,
- blue peter,
- buoy,
- caution light,
- danger sign,
- early symptom,
- falling barometer,
- flare,
- fog bell,
- fog signal,
- fog whistle,
- foghorn,
- gathering clouds,
- glance,
- go light,
- gong buoy,
- green light,
- heliograph,
- high sign,
- international alphabet flag,
- international numeral pennant,
- kick,
- leer,
- marker beacon,
- nod,
- nudge,
- omen,
- parachute flare,
- pilot flag,
- poke,
- police whistle,
- precursor,
- preliminary sign,
- premonitory sign,
- premonitory symptom,
- prodroma,
- prodrome,
- quarantine flag,
- radio beacon,
- red light,
- rocket,
- sailing aid,
- semaphore,
- semaphore flag,
- semaphore telegraph,
- sign,
- signal,
- signal beacon,
- signal bell,
- signal fire,
- signal flag,
- signal gong,
- signal gun,
- signal lamp,
- signal light,
- signal mast,
- signal post,
- signal rocket,
- signal shot,
- signal siren,
- signal tower,
- skull and crossbones,
- spar buoy,
- stop light,
- storm petrel,
- stormy petrel,
- symptom,
- the nod,
- the wink,
- thundercloud,
- thunderhead,
- touch,
- traffic light,
- traffic signal,
- warning sign,
- warning signal,
- watch fire,
- white flag,
- wigwag,
- wigwag flag,
- wink,
- yellow flag,
- yellow jack
- red light
collapse
- the signal to stop
- a cautionary sign of danger related words >
- Roman candle,
- aid to navigation,
- alarm,
- amber light,
- balefire,
- beacon,
- beacon fire,
- bell,
- bell buoy,
- blinker,
- blue peter,
- buoy,
- caution light,
- danger sign,
- early symptom,
- falling barometer,
- flare,
- fog bell,
- fog signal,
- fog whistle,
- foghorn,
- gathering clouds,
- glance,
- go light,
- gong buoy,
- green light,
- heliograph,
- high sign,
- international alphabet flag,
- international numeral pennant,
- kick,
- leer,
- marker beacon,
- nod,
- nudge,
- omen,
- parachute flare,
- pilot flag,
- poke,
- police whistle,
- precursor,
- preliminary sign,
- premonitory sign,
- premonitory symptom,
- prodroma,
- prodrome,
- quarantine flag,
- radio beacon,
- red flag,
- rocket,
- sailing aid,
- semaphore,
- semaphore flag,
- semaphore telegraph,
- sign,
- signal,
- signal beacon,
- signal bell,
- signal fire,
- signal flag,
- signal gong,
- signal gun,
- signal lamp,
- signal light,
- signal mast,
- signal post,
- signal rocket,
- signal shot,
- signal siren,
- signal tower,
- skull and crossbones,
- spar buoy,
- stop light,
- stop-and-go light,
- storm petrel,
- stormy petrel,
- symptom,
- the nod,
- the wink,
- thundercloud,
- thunderhead,
- touch,
- traffic light,
- traffic signal,
- warning sign,
- warning signal,
- watch fire,
- white flag,
- wigwag,
- wigwag flag,
- wink,
- yellow flag,
- yellow jack
- high sign
collapse
- a silent signal of warning or recognition; "she started to speak but he gave her the high sign" related words >
- Roman candle,
- SOS,
- aid to navigation,
- alarm,
- amber light,
- balefire,
- beacon,
- beacon fire,
- bell,
- bell buoy,
- blinker,
- blue peter,
- buoy,
- caution light,
- danger sign,
- early symptom,
- falling barometer,
- flare,
- fog bell,
- fog signal,
- fog whistle,
- foghorn,
- gathering clouds,
- glance,
- go light,
- gong buoy,
- green light,
- heliograph,
- international alphabet flag,
- international numeral pennant,
- kick,
- leer,
- marker beacon,
- nod,
- nudge,
- office,
- omen,
- parachute flare,
- pilot flag,
- poke,
- police whistle,
- precursor,
- preliminary sign,
- premonitory sign,
- premonitory symptom,
- prodroma,
- prodrome,
- quarantine flag,
- radio beacon,
- red flag,
- red light,
- rocket,
- sailing aid,
- semaphore,
- semaphore flag,
- semaphore telegraph,
- sign,
- signal,
- signal beacon,
- signal bell,
- signal fire,
- signal flag,
- signal gong,
- signal gun,
- signal lamp,
- signal light,
- signal mast,
- signal post,
- signal rocket,
- signal shot,
- signal siren,
- signal tower,
- skull and crossbones,
- spar buoy,
- stop light,
- storm petrel,
- stormy petrel,
- symptom,
- the nod,
- the wink,
- thundercloud,
- thunderhead,
- tip,
- tip-off,
- touch,
- traffic light,
- traffic signal,
- warning,
- warning sign,
- warning signal,
- watch fire,
- white flag,
- wigwag,
- wigwag flag,
- wink,
- yellow flag,
- yellow jack
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