Synonyms of swiftly in English:

swiftly

adverb

  • 1 the police reacted swiftly
    [Antonyms] unhurriedly in due course
  • 2 he went swiftly through the house
    rapidly, quickly, fast, speedily, briskly, at high speed, at full tilt, like the wind, like lightning, at breakneck speed, as fast as one's legs can carry one, as swift as an arrow
    literary apace
    [Antonyms] slowly
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