unmatched

1 being one of a pair or set without a corresponding mate a drawer full of unmatched socks Synonyms odd, unpairedRelated Words alone, lone, only, single, singular, sole, solitaryAntonyms matched, paired

2 having no equal or rival for excellence or desirability the house cat is a mouse-hunting machine of unmatched efficiency Synonyms incomparable, inimitable, matchless, nonpareil, peerless, unequaled (or unequalled), unexampled, only, unparalleled, unrivaled (or unrivalled), unsurpassable, unsurpassedRelated Words alone, singular, unique; exceptional, extraordinary, rare, uncommon, unusual; A-OK, A1, awesome, bang-up, banner, beautiful, blue-chip, boffo, bonny (also bonnie) [chiefly British], boss [slang], brag, brave, bully, bumper, capital, choice, classic, cool [slang], corking, crackerjack, cracking, dandy, divine, dope [slang], down [slang], dynamite, excellent, fab, fabulous, famous, fantabulous [slang], fantastic, fine, first-class, first-rate, first-string, five-star, frontline, gangbusters (also gangbuster), gone [slang], grand, great, groovy, heavenly, high-class, hot, hype [slang], immense, jim-dandy, keen, lovely, marvelous (or marvellous), mean, neat, nifty, noble, number one (also No. 1), numero uno, out-of-sight [slang], par excellence, peachy, peachy keen, phat [slang], prime, primo [slang], prize, prizewinning, quality, radical [slang], righteous [slang], sensational, splendid, stellar, sterling, superb, superior, superlative, supernal, swell, terrific, tip-top, top, top-notch, wizard [chiefly British], wonderful; better, preferred; exceptional, fancy, high-grade, specialNear Antonyms common, commonplace, everyday, familiar, frequent, garden, household, normal, ordinary, routine, ubiquitous, usual; inferior, lesser, worse, worst; bad, bastard, bush, bush-league, deficient, depressed, dissatisfactory, ill, inferior, lame, lousy, low, lower, off, paltry, poor, punk, substandard, unacceptable, unsatisfactory, wanting; low-grade, substandard; mediocre, second-class, second-rate; atrocious, awful, execrable, pathetic, rotten, terrible, vile, wretched