68 entries under strong topic. ×
| industrious(adjective, activity, work, keen) | |
| sedulous(adjective, activity, work, strain) | |
| earnest(adjective, enthusiastic, powerful, deep) | |
| energetic(adjective, work, keen, intense) | |
| busy(adjective, work, keen, intense) | |
| zealous(adjective, keen, intense, energetic) | |
| eager(adjective, keen, intense, energetic) | |
| intense(adjective, complete, severe, passionate) | |
| hard(adjective, difficult, powerful, tedious) | |
| ardent(adjective, passionate, powerful, deep) | |
| devoted(adjective, passionate, determined, ardent) | |
| fervent(adjective, passionate, powerful, deep) | |
| perseverant(adjective, passionate, ardent, resolute) | |
| concentrated(adjective, great, complete, sharp) | |
| keen(adjective, intense, energetic, powerful) | |
| severe(adjective, powerful, penetrating, fastidious) | |
| sharp(adjective, powerful, attentive, penetrating) | |
| vehement(adjective, passionate, powerful, deep) | |
| burning(powerful, active, busy, occupied) | |
| deep(adjective, great, powerful, forceful) |
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| APA | Smart Define. (2015). diligent thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/diligent/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "diligent thesaurus" https://smartdefine.org/diligent/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, diligent thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/diligent/thesaurus/synonyms>. |
| MLA | Smart Define. "diligent thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/diligent/thesaurus/synonyms> |