Pocket Thesaurus
Antonyms of hastily
suddenly, swiftly, nimbly, speedily, quickly, prematurely, carelessly, promptly, apace, fast, flat-out, impetuously, impulsively, lickety-split, posthaste, rapidly, rashly, recklessly, straightaway, hurriedly, double-quick, expeditiously, heedlessly, on spur of the moment, precipitately, subito, thoughtlessly, too quickly, unpremeditatedly
See this content immediately after install