100 entries under sturdy topic. ×
| insensible(adjective, dull, quiet, strong, hard) | |
| obdurate(adjective, strong, hard, tough, severe) | |
| reinforced(adjective, strong, sound, tough, solid) | |
| relentless(adjective, strong, hard, tough, severe) | |
| rigid(adjective, strong, hard, tough, severe) | |
| secure(adjective, strong, hard, sound, tough) | |
| sinewy(adjective, strong, sound, tough, solid) | |
| stark(adjective, strong, sound, tough, solid) | |
| staunch(adjective, strong, sound, tough, solid) | |
| strict(adjective, strong, hard, tough, severe) | |
| unbending(adjective, strong, hard, tough, severe) | |
| unsparing(adjective, strong, hard, tough, severe) | |
| adamant(adjective, strong, hard, tough) | |
| astringent(adjective, strong, hard, tough, severe) | |
| authoritarian(adjective, strong, hard, tough) | |
| bullheaded(adjective, strong, hard, tough) | |
| by the book(expression, adjective, idiom, strong, hard) | |
| disciplinary(adjective, strong, hard, tough) | |
| dyed-in-the-wool(adjective, strong, hard, tough) | |
| ferric(adjective, strong, hard, tough) |
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| APA | Smart Define. (2016). heavy thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/heavy/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "heavy thesaurus" https://smartdefine.org/heavy/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, heavy thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/heavy/thesaurus/synonyms>. |
| MLA | Smart Define. "heavy thesaurus" 25 January 2016. Web. 27 September 2026. <https://smartdefine.org/heavy/thesaurus/synonyms> |