See prime in Webster's New World Roget's A-Z Thesaurus II
adjective
Of fine quality:
choice, fine1, first-class, select, superior. See betterExceptionally good of its kind:
ace, banner, blue-ribbon, brag, capital, champion, excellent, fine1, first-class, first-rate, quality, splendid, superb, superior, terrific, tiptop, top. (Informal) A-one, bully, dandy, great, swell, topflight, topnotch. (Slang) boss. (Chiefly British) tophole. See goodMost important, influential, or significant:
capital, cardinal, chief, first, foremost, key, leading, main, major, number one, paramount, premier, primary, principal, top. See importantPreceding all others in time:
earliest, first, initial, maiden, original, pioneer, primary, primordial. See startNot derived from something else:
original, primary, primitive. See start
noun
A condition or time of vigor and freshness:
bloom1, blossom, efflorescence, florescence, flower, flush. See better
verb
To cause to be ready, as for use, consumption, or a special purpose:
fit1, fix, make, prepare, ready. See prepared
Learn more about prime