116 entries under tough topic. ×
| firm(noun, adjective, feature, state, characteristic) | |
| rigid(adjective, feature, state, characteristic, strong) | |
| hard(adjective, feature, state, characteristic, hard) | |
| unyielding(adjective, strong, hard, strain) | |
| inflexible(adjective, hard, severe, rough) | |
| stubborn(adjective, hard, rough, firm) | |
| refractory(adjective, hard, strain, rough) | |
| inexorable(adjective, severe, firm, harsh) | |
| uncompromising(adjective, hard, severe, rough) | |
| resolute(adjective, strong, hard, severe) | |
| obdurate(adjective, hard, severe, rough) | |
| unrelenting(adjective, severe, firm, harsh) | |
| relentless(adjective, severe, firm, harsh) | |
| obstinate(adjective, hard, rough, firm) | |
| formal(adjective, characteristic, correct, severe) | |
| set(adjective, hard, secure, severe) | |
| severe(adjective, hard, rough, firm) | |
| solid(adjective, set, strong, hard, secure) | |
| inelastic(adjective, hard, firm, solid) | |
| strict(adjective, hard, severe, rough) |
For more, visit
Stiff on
Power Thesaurus
| APA | Smart Define. (2015). stiff thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/stiff/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "stiff thesaurus" https://smartdefine.org/stiff/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, stiff thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/stiff/thesaurus/synonyms>. |
| MLA | Smart Define. "stiff thesaurus" 24 December 2015. Web. 26 September 2026. <https://smartdefine.org/stiff/thesaurus/synonyms> |