Synonyms|577Antonyms|125|Broader|8Narrower|14Related|988
2
provident(thoughtful, sober, cautious, prudent, wary)
2
punctual(adjective, thorough, meticulous, painstaking)
2
rapt(adjective, involved, absorbed, occupied, engaged)
2
regardful(thoughtful, sober, considerate, cautious, prudent)
2
rigorous(thoughtful, sober, cautious, prudent, wary)
2
serious(adjective, thoughtful, reflective)
2
single-minded
2
sprightly(adjective, active)
2
stickler(adjective, thorough, meticulous, painstaking)
2
stirring(adjective, active)
2
strong
2
tied up(expression, active, absorbed, occupied, working)
2
unflinching
2
uninterrupted
2
unsleeping
2
unswerving
2
unwearying
2
vivacious(adjective, active)
2
whiz(adjective, smart, skillful, industrious, diligent)
2
working(adjective, lively, active, busy, occupied)
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APASmart Define. (2015). assiduous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/assiduous/thesaurus/synonyms
ChicagoSmart Define. 2015. "assiduous thesaurus" https://smartdefine.org/assiduous/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, assiduous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/assiduous/thesaurus/synonyms>.
MLASmart Define. "assiduous thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/assiduous/thesaurus/synonyms>