42 entries under solid topic. ×
| powerful(adjective, strong, sound, tough) | |
| big(adjective, strong, great, sound, tough) | |
| durable(adjective, strong, sound, tough) | |
| substantial(adjective, strong, great, sound, tough) | |
| heavy(adjective, strong, sound, tough) | |
| sturdy(adjective, strong, sound, tough) | |
| well-built(adjective, strong, sound, tough) | |
| able(adjective, strong, sound, tough) | |
| able-bodied(adjective, strong, sound, tough) | |
| active(adjective, strong, sound, tough) | |
| athletic(adjective, strong, sound, tough) | |
| capable(adjective, strong, sound, tough) | |
| enduring(adjective, strong, sound, tough) | |
| energetic(adjective, strong, sound, tough) | |
| fixed(adjective, strong, sound, tough) | |
| forceful(adjective, strong, sound, tough) | |
| forcible(adjective, strong, sound, tough) | |
| hale(adjective, strong, sound, tough) | |
| hard as nails(expression, adjective, idiom, strong, sound) | |
| hardy(adjective, strong, sound, tough) |
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| APA | Smart Define. (2013). heavy-duty thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/heavy-duty/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "heavy-duty thesaurus" https://smartdefine.org/heavy-duty/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2013, heavy-duty thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/heavy-duty/thesaurus/synonyms>. |
| MLA | Smart Define. "heavy-duty thesaurus" 28 June 2013. Web. 26 September 2026. <https://smartdefine.org/heavy-duty/thesaurus/synonyms> |