- Definitions|2
- Thesaurus|3k
- Abbreviations|0
136 entries under strong topic. ×
| tough(adjective, mean, hard, severe) | |
| implacable(adjective, mean, hard, tough) | |
| intractable(adjective, hard, tough, rough) | |
| hard-nosed(adjective, mean, hard, secure) | |
| severe(adjective, hard, tough, severe) | |
| dogged(adjective, mean, hard, tough) | |
| mulish(adjective, mean, hard, tough) | |
| strict(adjective, hard, tough, moderate) | |
| tenacious(adjective, determined, resolute, obstinate) | |
| unwavering(adjective, secure, flat, firm) | |
| unchangeable(adjective, secure, moderate, flat) | |
| grim(adjective, hard, tough, severe) | |
| resolved(adjective, severe, flat, firm) | |
| rigorous(adjective, hard, tough, severe) | |
| harsh(adjective, mean, hard, tough) | |
| iron(adjective, mean, hard, tough) | |
| headstrong(adjective, hard, tough, rough) | |
| steely(adjective, hard, tough, firm) | |
| unalterable(adjective, set, hard, secure) | |
| persistent(adjective, tough, flat, firm) |
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| APA | Smart Define. (2016). inflexible thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/inflexible/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "inflexible thesaurus" https://smartdefine.org/inflexible/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, inflexible thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/inflexible/thesaurus/synonyms>. |
| MLA | Smart Define. "inflexible thesaurus" 24 March 2016. Web. 29 September 2026. <https://smartdefine.org/inflexible/thesaurus/synonyms> |