Synonyms and Antonyms of posthaste
with great speed ran posthaste for the doctor Synonyms apace, briskly, chop-chop, double-quick, fleetly, full tilt, hastily, hell-for-leather, hot, lickety-split, fast, presto, pronto, quick, quickly, rapidly, snappily, soon, speedily, swift, swiftlyRelated Words immediately, promptly, readily; impetuously, impulsively, rashly, recklessly; abruptly, suddenly; energetically, vigorouslyNear Antonyms laggardly, lingeringly, ploddingly, sluggishly; deliberately, leisurely; belatedly, delinquently, tardilyAntonyms slow, slowly
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