Synonyms|992Antonyms|161|Broader|8Narrower|14Related|977

75 entries under fast topic. ×

2
instantaneous(adjective, rapid, swift, sudden)
2
mercurial(nervous, restless, unreliable, changeable)
2
without warning(expression, adjective, violent, quick)
1
ASAP(rapid, swift)
1
agile(quick, rapid, speedy, swift)
1
alert(rapid, swift)
1
brief(adjective, violent, quick, rapid)
1
curt(adjective, keen, rough, energetic, violent)
1
double time(expression, rapid, swift)
1
expeditious(adjective, quick, abrupt, speedy)
1
expeditive(rapid, swift)
1
fleet(adjective, quick, abrupt, speedy)
1
going(rapid, swift)
1
harefooted(quick, rapid, speedy, swift)
1
lead out(expression, rapid, swift)
1
move it(expression, rapid, swift)
1
move on(expression, rapid, swift)
1
on the double(expression, idiom, quick, speedy)
1
perfunctory(quick, rapid, speedy, swift)
1
prompt(adjective, quick, rapid, speedy)
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ChicagoSmart Define. 2016. "impetuous thesaurus" https://smartdefine.org/impetuous/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, impetuous thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/impetuous/thesaurus/synonyms>.
MLASmart Define. "impetuous thesaurus" 24 January 2016. Web. 25 September 2026. <https://smartdefine.org/impetuous/thesaurus/synonyms>