precipitously Synonyms

sharply brashly haphazardly aggressively unexpectedly suddenly instantaneously wildly unawares swiftly steeply frantically heedlessly incautiously unthinkingly thoughtlessly recklessly penetratively offhandedly on a whim imprudently impetuously furiously hurriedly without warning speedily sharp headily headfirst hastily glancingly foolishly endways dashingly carelessly automatically acutely headlong helter-skelter rashly rapidly quickly precipitately precipitantly pell-mell instantly impulsively impromptu immediately abruptly