unknown

1 happening or existing without one's knowledge unknown to me was the fact that while I was out, my family was hurriedly preparing a surprise birthday party Synonyms unbeknownst (also unbeknown) Related Words unperceived, unrecognized, unsuspected; unaware, unconscious, unmindful; unknowing, unsuspecting, unwitting; ignorant, unacquainted, unfamiliar

2 not known or experienced before becoming a father brought unknown joy to his life Synonyms fresh, novel, original, strange, unaccustomed, unfamiliar, unheard-of, new, unprecedentedRelated Words innovative, unique; nontraditional, unconventional, untried, unused, unworn; pathbreaking, pioneering, trailblazingNear Antonyms conventional, established, traditional, tried, tried-and-true; derivative, imitativeAntonyms familiar, hackneyed, old, time-honored, tired, warmed-over

3 not widely known looking for a relatively unknown singer to record the song Synonyms nameless, no-name, noteless, uncelebrated, unfamous, obscure, unrecognized, unsungRelated Words insignificant, minor, unimportant; undistinguished, unexceptional, unremarkable; unpopular; anonymous, faceless, unnoticeable, unrecognizable; unnewsworthy, unnoticed; forgotten, unrememberedNear Antonyms fabled, fabulous, legendary; infamous; distinguished, eminent, exceptional, great, illustrious, notable, outstanding, prestigious, remarkable; estimable, honorable, reputable, respectable; important, influential, leading, major, newsworthy, noteworthy, significant; favorite, popular, preferredAntonyms celebrated, famed, famous, noted, notorious, prominent, renowned, well-known