Did you mean tetra umbra?
Related Words:
- unknown
collapse - a variable whose values are solutions of an equation
- an unknown and unexplored region; "they came like angels out the unknown"
- not known; "an unknown amount"; "an unknown island"; "an unknown writer"; "an unknown source"
- not known to exist; "things obscurely felt surged up from unsuspected depths in her"- Edith Wharton related words >
- Heaven,
- Paradise,
- a better place,
- able,
- abstruse,
- afterlife,
- afterworld,
- anonymous,
- beclouded,
- blind,
- buried,
- close,
- clouded,
- concealed,
- covered,
- covert,
- cryptonymic,
- cryptonymous,
- dark,
- dark horse,
- destiny,
- eclipsed,
- enigma,
- enigmatic,
- eternal home,
- fate,
- frontier,
- frontiers of knowledge,
- future state,
- hid,
- hidden,
- home,
- humble,
- ignotus,
- in a cloud,
- in a fog,
- in eclipse,
- in purdah,
- in the wings,
- incalculable,
- incognito,
- incognizable,
- incommunicado,
- inglorious,
- innominate,
- latent,
- life after death,
- life to come,
- little known,
- matter of ignorance,
- mysterious,
- mystery,
- n,
- nameless,
- next world,
- no credit to,
- obfuscated,
- obscure,
- obscured,
- occult,
- otherworld,
- postexistence,
- puzzle,
- puzzling,
- recondite,
- renownless,
- riddle,
- sealed,
- sealed book,
- secluded,
- secluse,
- secret,
- sequestered,
- strange,
- terra incognita,
- the beyond,
- the good hereafter,
- the grave,
- the great beyond,
- the great hereafter,
- the hereafter,
- the incalculable,
- the strange,
- the unfamiliar,
- the unknowable,
- the unknown,
- unacknowledged,
- unapparent,
- unapprehended,
- unascertained,
- unbeknown,
- uncelebrated,
- uncharted,
- unclassified,
- undefined,
- under an eclipse,
- under cover,
- under house arrest,
- under wraps,
- underground,
- undesignated,
- undisclosed,
- undiscoverable,
- undiscovered,
- undistinguished,
- undivulged,
- unexplained,
- unexplored,
- unexplored ground,
- unexplored territory,
- unexposed,
- unfamed,
- unfamiliar,
- unfathomed,
- unglorified,
- unheard,
- unheard-of,
- unhonored,
- unidentified,
- uninvestigated,
- unknowable,
- unknown quantity,
- unnamed,
- unnotable,
- unnoted,
- unnoticed,
- unperceived,
- unplumbed,
- unpopular,
- unrecognized,
- unremarked,
- unrenowned,
- unrevealed,
- unspecified,
- unsung,
- unsuspected,
- untold,
- untouched,
- virgin,
- what bodes,
- what is fated,
- without a name,
- world to come,
- wrapped in clouds,
- x,
- z
- above water,
- abstruse,
- armored,
- at anchor,
- back-door,
- backstairs,
- beclouded,
- behind the curtain,
- behind the scenes,
- behind the veil,
- blind,
- buried,
- cased,
- ceiled,
- clandestine,
- cloaked,
- close,
- clouded,
- coated,
- concealed,
- confidential,
- coped,
- covered,
- covert,
- covertly,
- cowled,
- curtained,
- doggo,
- eclipsed,
- encapsulated,
- encapsuled,
- encased,
- enveloped,
- enwrapped,
- feline,
- filmed,
- floored,
- furtive,
- hid,
- hidden,
- hidden out,
- hidlings,
- high and dry,
- hole-and-corner,
- hooded,
- housed,
- hugger-mugger,
- hush-hush,
- in a cloud,
- in a corner,
- in a fog,
- in a whisper,
- in ambush,
- in darkness,
- in eclipse,
- in harbor,
- in hiding,
- in hidlings,
- in purdah,
- in safety,
- in secret,
- in the background,
- in the clear,
- in the dark,
- in the wings,
- incommunicado,
- latent,
- loricate,
- loricated,
- lurking,
- mantled,
- masked,
- muffled,
- mysterious,
- nobody the wiser,
- obfuscated,
- obscure,
- obscured,
- occult,
- occulted,
- on,
- on tiptoe,
- out of danger,
- packaged,
- past danger,
- paved,
- private,
- privy,
- prowling,
- pussyfoot,
- pussyfooted,
- quiet,
- recondite,
- roofed-in,
- screened,
- scummed,
- secluded,
- secluse,
- secret,
- secretly,
- sequestered,
- sheathed,
- shelled,
- shielded,
- shifty,
- shrouded,
- skulking,
- slinking,
- slinky,
- sly,
- sneaking,
- sneaky,
- sotto voce,
- stealing,
- stealthy,
- sub rosa,
- surreptitious,
- swathed,
- tented,
- terra firma,
- under an eclipse,
- under cover,
- under house arrest,
- under the breath,
- under the rose,
- under wraps,
- under-the-counter,
- under-the-table,
- underground,
- underhand,
- underhanded,
- underneath,
- unknown,
- unobtrusive,
- veiled,
- waiting concealed,
- walled,
- walled-in,
- with bated breath,
- wrapped,
- wrapped in clouds
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