2
conscionable(adjective, thorough, meticulous, painstaking)
2
continuing
2
dauntless(adjective, resolute, tenacious)
2
dedicated(adjective, resolute)
2
demanding(adjective, fastidious)
2
detailed
2
discerning(adjective, fastidious)
2
dutiful
2
dynamic
2
fascinated(adjective, involved, attentive, absorbed, occupied)
2
fast
2
fraught
2
fussbudget(adjective, thorough, meticulous, painstaking)
2
grind(adjective, informal, persevering)
2
guarded(adjective, vigilant)
2
headstrong(adjective, resolute, tenacious)
2
hearty(adjective, resolute, tenacious)
2
immersed(adjective, involved, attentive, absorbed, occupied)
2
implacable(adjective, resolute)
2
inexorable(adjective, resolute)
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APASmart Define. (2015). diligent thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/diligent/thesaurus/synonyms
ChicagoSmart Define. 2015. "diligent thesaurus" https://smartdefine.org/diligent/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, diligent thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/diligent/thesaurus/synonyms>.
MLASmart Define. "diligent thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/diligent/thesaurus/synonyms>