179 entries under strong topic. ×
| forcible(adjective, clear, strength, certain) | |
| intensive(adjective, intense, heavy, powerful) | |
| iron(noun, adjective, mean, tough) | |
| strenuously(adverb, thoroughly, closely, extremely) | |
| vigorously(adverb, authority, fast, intensely) | |
| violent(adjective, nature, great, tough) | |
| authoritarian(adjective, tough, severe, firm) | |
| bullheaded(adjective, tough, determined, resolute) | |
| compressed(adjective, set, tough, firm) | |
| diligent(adjective, difficult, powerful, tedious) | |
| energetically(adjective, adverb, fast, intensely) | |
| fervent(adjective, powerful, penetrating, tenacious) | |
| fierce(adjective, mean, tough, severe) | |
| fixed(adjective, adverb, mean, rough) | |
| forceful(adjective, clear, severe, certain) | |
| hard-bitten(adjective, continue, rough, harsh) | |
| keen(great, intense, powerful, penetrating) | |
| mulish(adjective, mean, tough, determined) | |
| rocklike(adjective, firm, substantial, stiff) | |
| sinewy(adjective, tough, muscular, wiry) |
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| APA | Smart Define. (2016). hard thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/hard/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "hard thesaurus" https://smartdefine.org/hard/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, hard thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/hard/thesaurus/synonyms>. |
| MLA | Smart Define. "hard thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/hard/thesaurus/synonyms> |