25 entries under painstaking topic. ×

79
diligent(adjective, work, keen, strain, intense)
32
assiduous(adjective, work, strain, firmness, thorough)
30
industrious(adjective, work, keen, strain, intense)
24
sedulous(adjective, work, strain, firmness, thorough)
11
conscientious(adjective, work, strain, firmness, thorough)
10
earnest(adjective, thorough, meticulous)
5
persevering(adjective, thorough, meticulous)
4
punctilious(adjective, thorough, meticulous)
4
strenuous(adjective, thorough, meticulous)
3
careful(adjective, thoughtful, serious, reliable, thorough)
3
scrupulous(adjective, thorough, meticulous)
3
exacting(adjective, thorough, meticulous)
3
picky(adjective, thorough, meticulous)
3
thoroughgoing(adjective, thorough, meticulous)
2
conscionable(adjective, thorough, meticulous)
2
fussy(adjective, thorough, meticulous)
2
stickler(adjective, thorough, meticulous)
2
exact(adjective, thorough, meticulous)
2
heedful(adjective, thorough, meticulous)
2
particular(adjective, thorough, meticulous)
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APASmart Define. (2015). hard-working thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/hard-working/thesaurus/synonyms
ChicagoSmart Define. 2015. "hard-working thesaurus" https://smartdefine.org/hard-working/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, hard-working thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/hard-working/thesaurus/synonyms>.
MLASmart Define. "hard-working thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/hard-working/thesaurus/synonyms>