List of unique synonyms and unique related words.
a certain, absolute, almost unheard-of, alone, an, another, any, any one, appropriate, atomic, authentic, avant-garde, azygous, beguiling, bewildering, beyond compare, beyond comparison, breakaway, celibate, characteristic, creative, different, distinctive, distinguished, easily first, either, else, enigmatic, exceptional, exclusive, extraordinary, fabulous, facile princeps, fantastic, fascinating, first and last, firsthand, fresh, idiocratic, idiosyncratic, imaginative, immortal, impair, in character, incomparable, incomprehensible, inconceivable, incredible, individual, indivisible, infrequent, inimitable, integral, intrinsic, invincible, irreducible, lone, marked, marvelous, matchless, miraculous, monadic, monistic, new, not that sort, not the same, not the type, novel, nulli secundus, odd, of a sort, of another sort, of sorts, offbeat, one, one and only, only, only-begotten, original, other, other than, otherwise, outlandish, particular, passing strange, peculiar, peerless, phenomenal, prodigious, proper, puzzling, quintessential, rare, recherche, remarkable, revolutionary, scarce, second to none, seldom met with, seldom seen, sensational, separate, simple, single, singular, slow, sole, solid, solitary, solo, sparse, special, strange, striking, stupendous, sui generis, true to form, unanalyzable, unapproachable, unapproached, unbeatable, uncommon, uncustomary, underived, undivided, undreamed-of, unequaled, unexampled, unexcelled, unexpected, unfamiliar, unfrequent, unheard-of, uniform, unimaginable, unitary, unmatchable, unmatched, unordinary, unpaired, unparagoned, unparalleled, unpeered, unprecedented, unrepeatable, unrepeated, unrivaled, unsurpassable, unsurpassed, unthinkable, unthought-of, unusual, unwonted, whole, without equal, without parallel, wonderful, wondrous