adjective
1.
Synonyms: only 2, alone, lone, singular, sole, solitary, solo, unexampled, unrepeatable
2.
Synonyms: single 2, lone, one, only, particular, separate, sole, solitary
3.
Synonyms: alone 3, matchless, only, peerless, unequaled, unmatched, unparagoned, unparalleled, unrivaled
4.
Synonyms: exceptional 1, extraordinary, rare, singular, uncommon, unimaginable, unordinary, unthinkable, unusual, unwonted