57 synonyms for unique such as incomparable, distinctive, characteristic of, beyond compare, and extraordinary. Unique is an adjective, and its antonyms are common and ordinary.
Distinctive, eccentric, especial, exclusive, idiosyncratic, in a class by itself, individual, isolated, lone, novel, odd, one and only, one-off, only, peculiar, quirky, rare, single, sole, solitary, special, strange, sui generis, uncommon, unrepeatable, unrepeated, and unusual.
Characteristic of, found only in, particular, peculiar, specific, and typical of.
Beyond compare, extraordinary, incomparable, inimitable, matchless, nonpareil, notable, noteworthy, outstanding, peerless, remarkable, second to none, signal, singular, special, superior, unequalled, unexampled, unexcelled, unmatched, unparalleled, unsurpassed, and without equal.