adverb
Synonyms: fast 2, apace, expeditiously, flat-out, lickety-split, posthaste, quickly, rapidly, speedily, swiftly
Related Word: agilely, nimbly; impetuously, impulsively, unpremeditatedly; carelessly, recklessly, thoughtlessly; precipitately, prematurely, suddenly
Contrasted words: carefully, designedly, studiedly, thoughtfully; gradually, leisurely, slowly, sluggishly
Antonyms: deliberately