An unknown and unexplored region.

synonyms: unknown, unknown region.

Roget 533: secret; dead secret, profound secret; arcanum^†, mystery; latency etc. 526; Asian mystery^†; sealed book, secrets of the prison house; le desous des cartes [Fr.].    enigma, riddle, puzzle, nut to crack, conundrum, charade, rebus, logogriph^†; monogram, anagram; Sphinx; crux criticorum [Lat.].    maze, labyrinth, Hyrcynian wood; intricacy, meander.    problem etc. (question) 461; paradox etc. (difficulty) 704; unintelligibility etc. 519; terra incognita etc. (ignorance) 491.    ... show more

Roget 491: ignorance, nescience, tabula rasa [Lat.], crass ignorance, ignorance crasse [Fr.]; unfamiliarity, unacquaintance^†; unconsciousness etc. adj.; darkness, blindness; incomprehension, inexperience, simplicity.    unknown quantities, x, y, z.    sealed book, terra incognita, virgin soil, unexplored ground; dark ages.    [Imperfect knowledge] smattering, sciolism^†, glimmering, dilettantism; bewilderment etc. (uncertainty) 475; incapacity.    [Affectation of knowledge] pedantry; charlatanry, charlatism^†; Philister^†, Philistine.    ... show more

Dutch: terra incognita
Polish: terra incognita