343 entries under adjective topic. ×
| undaunted | |
| unyielding | |
| working(lively, active, busy, occupied) | |
| aggressive(keen, intense, energetic, lively) | |
| brisk | |
| bullheaded(resolute, tenacious) | |
| businesslike(activity, efficient, professional) | |
| concerned | |
| conscionable(thorough, meticulous, painstaking) | |
| dauntless(resolute, tenacious) | |
| dedicated | |
| demanding | |
| discerning | |
| dutiful | |
| dynamic | |
| fascinated(involved, attentive, absorbed, occupied) | |
| fast | |
| fussbudget(thorough, meticulous, painstaking) | |
| grind(informal, persevering) | |
| guarded |
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| APA | Smart Define. (2015). diligent thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/diligent/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "diligent thesaurus" https://smartdefine.org/diligent/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, diligent thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/diligent/thesaurus/synonyms>. |
| MLA | Smart Define. "diligent thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/diligent/thesaurus/synonyms> |