343 entries under adjective topic. ×

6
particular(thorough, meticulous, fastidious, vigilant)
6
picky(precise, thorough, meticulous, fastidious)
6
regardful(attentive, vigilant)
6
responsible(careful, attentive, thorough, meticulous)
6
staunch(resolute, tenacious)
6
strong(great, sharp, harsh, powerful)
6
unswerving
6
watchful(attentive, vigilant)
5
relentless
5
ardent(strong, passionate, powerful, deep)
5
bold(keen, intense, energetic, lively)
5
cautious(attentive, vigilant)
5
devoted(strong, passionate, determined, ardent)
5
engrossed(complete, total, lively, active)
5
enterprising(keen, intense, energetic, lively)
5
fervent(strong, passionate, powerful, deep)
5
firm
5
perseverant(strong, passionate, ardent, resolute)
5
rapt(involved, attentive, absorbed, occupied)
5
ready(keen, intense, energetic, lively)
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APASmart Define. (2015). diligent thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/diligent/thesaurus/synonyms
ChicagoSmart Define. 2015. "diligent thesaurus" https://smartdefine.org/diligent/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, diligent thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/diligent/thesaurus/synonyms>.
MLASmart Define. "diligent thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/diligent/thesaurus/synonyms>