A-one adj 1: of 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" [syn: {ace}, {A-one}, {crack}, {first-rate}, {super}, {tiptop}, {topnotch}, {top-notch}, {tops(p)}]