Synonyms of swift in English:

swift


See definition of swift

adjective

1‘Ramsay made a swift decision’

SYNONYMS
prompt, rapid, sudden, immediate, instant, instantaneous, without delay, ready, punctual
abrupt, unhesitating, hasty, hurried, precipitate, headlong
informal p.d.q., pretty damn quick
ANTONYMS

unhurried

2‘most of them are swift runners’

SYNONYMS
fast, rapid, quick, speedy, fleet-footed, fleet, swift as an arrow, like the wind, like lightning
literary winged, flying
informal nippy, supersonic
ANTONYMS

slow, sluggish

3‘pupils are expected to make swift progress’

SYNONYMS
rapid, quick, brisk, lively, speedy, fast, high-speed, expeditious, express, breakneck, meteoric, whirlwind
informal spanking, nippy
ANTONYMS

slow, leisurely