Synonyms|577Antonyms|125|Broader|8Narrower|14Related|988
2
fervent
2
finical
2
firm
2
fussbudget(adjective, thorough, meticulous, painstaking)
2
hard
2
indomitable
2
insistent
2
lasting
2
lively(adjective, active)
2
loyal
2
moving(adjective, active)
2
obstinate
2
on the ball(expression, idiom, considerate, responsive, helpful)
2
on the job(expression, idiom, considerate, responsive, helpful)
2
painful
2
permanent
2
persnickety(adjective, thorough, meticulous, painstaking)
2
picky(adjective, thorough, meticulous, painstaking)
2
precise(thoughtful, sober, cautious, prudent, wary)
2
preoccupied(considerate, responsive, helpful)
For more, visit Assiduous on Power Thesaurus
11 years ago|15k views|share |citing 
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>