Open English Wordnet
Nouns
(n)one, 1, I, ace, single, unitythe smallest whole number or a numeral representing this number“he has the one but will need a two and three to go with it”,
“they had lunch at one” (n)aceone of four playing cards in a deck having a single pip on its face (n)ace, adept, champion, sensation, maven, mavin, virtuoso, genius, hotshot, star, superstar, whiz, whizz, wizard, wizsomeone who is dazzlingly skilled in any field (n)acea serve that the receiver is unable to reach Verbs
(v)acescore an ace against“He aced his opponents” (v)aceplay (a hole) in one stroke (v)aceserve an ace against (someone) Adjectives
(s)ace, A-one, crack, first-rate, super, tiptop, topnotch, top-notch, topsof the highest quality“an ace reporter”,
“a crack shot”,
“a first-rate golfer”,
“a super party”,
“played top-notch tennis”,
“an athlete in tiptop condition”,
“she is absolutely tops”