earlyEnglishOxford American Thesaurusearly adjective 1 early copies of the book are now ready: advance, forward, prior; initial, preliminary, first, primary; pilot, test, trial. ▷antonyms late. 2 an early death: untimely, premature; too soon, too early, before time; archaic unseasonable. 3 bronze was used widely by early man: primitive, ancient, prehistoric, antediluvian, primeval, primordial; of long ago; literary of yore; rare primigenial, pristine. ▷antonyms modern. 4 he produced an early official statement: prompt, timely, quick, speedy, rapid, fast, without delay, expeditious; archaic rathe. ▷antonyms overdue.adverb 1 Rachel has to get up early: early in the day, in the early morning; at dawn, at daybreak, at cockcrow, with the lark; British, informal at stupid o'clock. ▷antonyms late. 2 they hoped to leave school early: before the usual time, before the appointed time; prematurely, too soon; ahead of time, ahead of schedule, in good time; literary betimes.