5
abrupt(adjective, direct, violent, quick, speedy)
5
attached(adjective, close, secure, correct, firm)
5
barred
5
bound(adjective, close, strong, tough, firm)
5
changeless(adjective, firm, solid, stable, fixed)
5
chop-chop(adverb, quickly, rapidly, pronto)
5
colorfast(adjective, continue)
5
confirmed(adjective, honest, pure, sure, constant)
5
dedicated(adjective, honest, intense, pure, resolute)
5
deep
5
directly(adverb, quickly, rapidly, pronto)
5
double-quick(adjective, adverb, soon, hastily, swiftly)
5
energetic(adjective, keen, active, rapid, speedy)
5
eternal(adjective, state)
5
free(unrestrained, unimpeded)
5
gay(adjective, free, restraint, casual, confident)
5
good
5
immediately(adjective, adverb, interjection, quickly, rapidly)
5
intemperate(adjective, open, light, wild, loose)
5
latched
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APASmart Define. (2016). fast thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/fast/thesaurus/synonyms
ChicagoSmart Define. 2016. "fast thesaurus" https://smartdefine.org/fast/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, fast thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/fast/thesaurus/synonyms>.
MLASmart Define. "fast thesaurus" 1 April 2016. Web. 21 September 2026. <https://smartdefine.org/fast/thesaurus/synonyms>