- Definitions|2
- Thesaurus|3k
- Abbreviations|0
124 entries under tough topic. ×
| forceful(adjective, strong, severe, firm) | |
| frowning(adjective, strong, hard, severe) | |
| hang-tough(adjective, strong, hard, harsh) | |
| hard-shell(adjective, strong, hard, severe) | |
| hard-shelled(adjective, hard, severe, rough) | |
| hard as nails(expression, adjective, idiom, set, hard) | |
| heavy(adjective, strong, hard, severe) | |
| insensible(adjective, strong, hard, careless) | |
| jelled(adjective, hard, firm, solid) | |
| mortified(adjective, strong, hard, severe) | |
| ornery(adjective, firm, unreasonable, grim) | |
| serious(adjective, strong, hard, severe) | |
| stout(adjective, strong, hard, firm) | |
| thick(adjective, strong, hard, firm) | |
| unreasonable(firm, obstinate, stubborn, willful) | |
| untoward(firm, unreasonable, obstinate, stubborn) | |
| close-grained(hard, solid, rigid) | |
| ferric(adjective, strong, hard, sturdy) | |
| ferrous(adjective, strong, hard, sturdy) | |
| fine-grained(hard, solid, rigid) |
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| APA | Smart Define. (2016). inflexible thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/inflexible/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "inflexible thesaurus" https://smartdefine.org/inflexible/thesaurus/synonyms (accessed October 1, 2026). |
| Harvard | Smart Define 2016, inflexible thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/inflexible/thesaurus/synonyms>. |
| MLA | Smart Define. "inflexible thesaurus" 24 March 2016. Web. 1 October 2026. <https://smartdefine.org/inflexible/thesaurus/synonyms> |