- unknown
- adj1. unfamiliar, strange, foreign, alien, peregrine; new, novel, never experienced before, virgin.2. unexplored, untracked, untraversed, untraveled; uninvestigated, unstudied, unresearched, untraced; unheard-of, undiscovered, unnoticed, unseen; unfamous, unrenowned, renownless, unillustrious, undistinguished, uneminent; anonymous, anonymal, nameless, innominate.3. unrevealed, undisclosed, untold, withheld, to be announced; secret, hidden, concealed, hermetic, her-metical; obscure, dark, occult, esoteric; mysterious, arcane, cryptic, puzzling, inscrutable, insolvable, insoluble, enigmatic, enigmatical.4. unascertained, undetermined, unmeasured, uncounted, uncalculated, indeterminate, unestablished, unfixed, undefined, unset, unsettled, undecided, up in the air; unidentified, x, unnamed, unlabeled, undesignated, uncategorized, neither fish nor fowl.n5. virgin soil, unexplored territory or ground, Latin, terra incognita; unknown factor or quantity, x; secret, arcanum, closed or sealed book; enigma, mystery, question, question mark, puzzle, riddle, conundrum; unknowable, deep or profound secret, mystery or mysteries, unsolved mystery or puzzle, sphinx.
A Note on the Style of the synonym finder. 2014.