5
squeamish(adjective, character, behavior, pedant)
4
accurate(adjective, complete, exact, certain, full)
4
assiduity(noun, activity)
4
businesslike(adjective, activity, exact, careful, regular)
4
complex(adjective, fancy, exact, involved, busy)
4
detail-oriented(adjective, person)
4
earnest(adjective, active, careful, regular, serious)
4
hard-working(adjective, activity, careful, thorough, exertion)
4
hardworking(adjective, difficult, regular, serious, practical)
4
heedful(adjective, exact, careful, thorough, scrupulous)
4
industry(noun, activity)
4
painful
4
persevering(adjective, thorough, meticulous)
4
picky(adjective, precise, thorough, meticulous)
4
thoroughness(noun, care, careful, correctness, precision)
4
tireless
4
workaholic
3
deliberate(adjective, slow, exact, careful, precise)
3
carefulness(noun, care, careful, correctness, precision)
3
conscionable(adjective, exact, careful, thorough, scrupulous)
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APASmart Define. (2016). painstaking thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/painstaking/thesaurus/synonyms
ChicagoSmart Define. 2016. "painstaking thesaurus" https://smartdefine.org/painstaking/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, painstaking thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/painstaking/thesaurus/synonyms>.
MLASmart Define. "painstaking thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/painstaking/thesaurus/synonyms>