Synonyms for unknown

Noun

1. unknown, unknown region, terra incognita, region

usage: an unknown and unexplored region; "they came like angels out the unknown"

2. stranger, alien, unknown, intruder, interloper, trespasser

usage: anyone who does not belong in the environment in which they are found

3. unknown, unknown quantity, variable

usage: a variable whose values are solutions of an equation

Adjective

1. unknown (vs. known), chartless, uncharted, unmapped, unbeknown(predicate), unbeknownst(predicate), undiagnosed, undiscovered, unexplored, unheard-of, unidentified, transcendent, unknowable, inglorious#2, dishonorable, unacknowledged, unfamiliar

usage: not known; "an unknown amount"; "an unknown island"; "an unknown writer"; "an unknown source"

2. nameless, unidentified, unknown, unnamed, anonymous (vs. onymous), anon.

usage: being or having an unknown or unnamed source; "a poem by an unknown author"; "corporations responsible to nameless owners"; "an unnamed donor"

3. unknown, unsuspected (vs. suspected)

usage: not known to exist; "things obscurely felt surged up from unsuspected depths in her"- Edith Wharton

4. obscure, unknown, unsung, inglorious (vs. glorious), dishonorable

usage: not famous or acclaimed; "an obscure family"; "unsung heroes of the war"

5. strange, unknown, unfamiliar (vs. familiar)

usage: not known before; "used many strange words"; "saw many strange faces in the crowd"; "don't let anyone unknown into the house"