179 entries under strong topic. ×
| tenacious(adjective, determined, fixed, persistent) | |
| vehement(adjective, intense, powerful, penetrating) | |
| Herculean(adjective, difficult, powerful, awkward) | |
| ardent(powerful, penetrating) | |
| eager(powerful, penetrating) | |
| energetic(powerful, penetrating) | |
| fibrous(adjective, rough, coarse, fresh) | |
| fiercely(adjective, adverb, fast, intensely) | |
| forcefully | |
| hard-core(adjective, tough, severe, firm) | |
| indomitable(adjective, set, great, tough) | |
| intense(adjective, great, severe, harsh) | |
| lean(scrawny, skinny, wiry) | |
| packed(adjective, set, firm, solid) | |
| penetrating(powerful, cutting, hurtful) | |
| stiff-necked(adjective, mean, tough, harsh) | |
| zealous(powerful, penetrating) | |
| astringent(adjective, tough, severe, sharp) | |
| brawny(adjective, person, body, sturdy) | |
| consuming(pain, powerful, penetrating) |
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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> |