- Definitions|2
- Thesaurus|3k
- Abbreviations|0
136 entries under strong topic. ×
| enduring(adjective, flat, firm, certain) | |
| fast(adjective, close, secure, tough) | |
| forced(affected, strained, standoffish, formal) | |
| indurated(adjective, set, hard, firm) | |
| loyal(adjective, firm, determined, bold) | |
| robust(adjective, hard, tough, solid) | |
| rugged(adjective, set, hard, tough) | |
| stable(adjective, secure, moderate, flat) | |
| stalwart(adjective, hard, tough, firm) | |
| ungraceful(adjective, hard, firm, solid) | |
| abiding(adjective, flat, certain, determined) | |
| bitter(adjective, set, hard, tough) | |
| by the book(expression, adjective, idiom, hard) | |
| disciplinary(adjective, hard, tough, severe) | |
| dyed-in-the-wool(adjective, set, hard, tough) | |
| faithful(adjective, firm, determined, bold) | |
| forbidding(adjective, person, hard, tough) | |
| forceful(adjective, tough, severe, firm) | |
| frowning(adjective, hard, tough, severe) | |
| hang-tough(adjective, hard, tough, harsh) |
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| APA | Smart Define. (2016). inflexible thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/inflexible/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "inflexible thesaurus" https://smartdefine.org/inflexible/thesaurus/synonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2016, inflexible thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/inflexible/thesaurus/synonyms>. |
| MLA | Smart Define. "inflexible thesaurus" 24 March 2016. Web. 30 September 2026. <https://smartdefine.org/inflexible/thesaurus/synonyms> |