547 entries under adjective topic. ×

8
galloping(fast, velocity, hasty, urgent)
8
irascible(nervous, emotional, restless, volatile)
8
knowing(sharp, smart, bright, skill)
8
posthaste(adverb, hot, fast, speedy)
8
quick-tempered(nervous, emotional, restless, volatile)
8
soon(adverb, immediate, directly, quickly)
8
unexpected(passionate, violent, fast, abrupt)
8
vivacious(sharp, bright, energetic, lively)
7
able(smart, bright, rational, careful)
7
dashing(cool, keen, express, intense)
7
fast paced
7
fresh(cool, pleasant, keen, sharp)
7
impulsive(noun, nervous, emotional, thoughtless)
7
mercurial(sharp, lively, fast, restless)
7
observant(understanding, cool, keen, sharp)
7
precipitous(unusual, fast, rash, abrupt)
7
pronto(adverb, informal, hot, fast)
7
sharp-witted(keen, ability, smart, bright)
7
slapdash(casual, speedy, hasty, swift)
7
superficial(light, casual, slick, hasty)
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APASmart Define. (2016). quick thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/quick/thesaurus/synonyms
ChicagoSmart Define. 2016. "quick thesaurus" https://smartdefine.org/quick/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, quick thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/quick/thesaurus/synonyms>.
MLASmart Define. "quick thesaurus" 1 April 2016. Web. 21 September 2026. <https://smartdefine.org/quick/thesaurus/synonyms>