- Definitions|1
- Thesaurus|2.1k
- Abbreviations|0
108 entries under stiff topic. ×
| stout(adjective, strong, sound, tough, strain) | |
| fast(adjective, strong, secure, tough, strain) | |
| robust(adjective, strong, hard, sound, tough) | |
| substantial(adjective, strong, hard, sound, tough) | |
| severe(adjective, appearance, mean, clear, strong) | |
| iron(adjective, mean, strong, hard, tough) | |
| staunch(adjective, clear, strong, sound, tough) | |
| solid(adjective, set, strong, hard, sound) | |
| strict(adjective, strong, hard, tough, easy) | |
| hidebound(adjective, firm, determined, resolute) | |
| rigorous(adjective, strong, hard, tough, harsh) | |
| stony(adjective, mean, hard, firm, harsh) | |
| indurate(adjective, set, mean, hard, firm) | |
| sturdy(adjective, set, strong, hard, sound) | |
| hardened(adjective, set, hard, tough, firm) | |
| single-minded(adjective, tough, firm, harsh, cruel) | |
| stalwart(adjective, strong, hard, sound, tough) | |
| callous(adjective, mean, hard, severe, rough) | |
| dense(adjective, set, strong, hard, tough) | |
| impenetrable(adjective, set, hard, tough, firm) |
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| APA | Smart Define. (2016). unyielding thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unyielding/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "unyielding thesaurus" https://smartdefine.org/unyielding/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, unyielding thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unyielding/thesaurus/synonyms>. |
| MLA | Smart Define. "unyielding thesaurus" 10 March 2016. Web. 28 September 2026. <https://smartdefine.org/unyielding/thesaurus/synonyms> |