Synonyms|674Antonyms|57|Broader|10Narrower|0Related|241

236 entries under adjective topic. ×

4
desperate(wild, anxious, worried, thoughtless)
4
harum-scarum(violent, fast, careful, quick)
4
imprudent(careless, wild, foolish, stupid)
4
incautious(rude, careless, wild, careful)
4
out of the blue
4
sheer(sharp, course, steep, abrupt)
4
steep(sharp, course, extreme, abrupt)
4
whirlwind(noun, fast, quick, rapid)
3
brusque(keen, violent, anxious, eager)
3
dashing
3
foolish(careless, stupid, thoughtless, impulsive)
3
harebrained(careless, wild, thoughtless, impulsive)
3
ill-advised(rude, violent, careless, wild)
3
inconsiderate(rude, wild, quick, thoughtless)
3
passionate(violent, careless, enthusiastic, excited)
3
posthaste(adverb, fast, rapid, swift)
3
rushed(quick, summary, swift, instant)
3
sharp(course, steep, sheer, sudden)
3
snappy(keen, prompt, energetic, violent)
3
spontaneous(noun, thoughtless, rash, unthinking)
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ChicagoSmart Define. 2015. "headlong thesaurus" https://smartdefine.org/headlong/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, headlong thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/headlong/thesaurus/synonyms>.
MLASmart Define. "headlong thesaurus" 3 August 2015. Web. 24 September 2026. <https://smartdefine.org/headlong/thesaurus/synonyms>