unusual

unusual adjective aberrant, abnormal, alien, anomalous, astonishing, astounding, atypical, bizarre, choice, conspicuous, curious, different, distinctive, exceptional, extraordinary, extreme, fantastic, fresh, important, incomparable, inconceivable, inconsistent, incredible, indescribable, individual, infrequent, inusitate, irregular, little-known, marked, marvelous, matchless, modern, new, newfangled, nonpareil, notable, novel, occasional, odd, offbeat, original, out of the ordinary, outlandish, outstanding, particular, peculiar, phenomenal, portentous, prodigious, prominent, rare, refreshing, remarkable, scarce, significant, singular, special, startling, strange, striking, supernormal, surprising, unaccustomed, unclassifiable, uncommon, unconventional, uncustomary, unequaled, unexpected, unfamiliar, unheard of, unique, unmatched, unnatural, unorthodox, unparalleled, unprecedented, unprevalent, unrivaled, untraditional, untypical, unwonted
Associated concepts: cruel and unusual punishment

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See also: anomalous, distinct, distinctive, eccentric, extraordinary, foreign, individual, infrequent, irregular, lurid, momentous, nonconforming, noteworthy, novel, original, particular, patent, peculiar, portentous, rare, remarkable, scarce, singular, special, specific, unaccustomed, uncommon, unexpected, unforeseeable, unique, unorthodox, unprecedented