- Definitions|2
- Thesaurus|3k
- Abbreviations|0
136 entries under strong topic. ×
| solid(adjective, hard, secure, smooth) | |
| unswerving(adjective, smooth, tough, firm) | |
| austere(adjective, hard, tough, severe) | |
| stiff-necked(adjective, mean, hard, tough) | |
| hardheaded(adjective, hard, tough, cold) | |
| staunch(adjective, tough, flat, firm) | |
| flinty(adjective, hard, tough, severe) | |
| hard-line(adjective, hard, tough, severe) | |
| cruel(adjective, hard, tough, severe) | |
| hard-boiled(adjective, person, mean, hard) | |
| indomitable(adjective, set, hard, tough) | |
| tight(adjective, close, hard, tough) | |
| undeviating(adjective, smooth, flat, harsh) | |
| constant(adjective, secure, moderate, flat) | |
| persevering(adjective, tough, flat, firm) | |
| steady(adjective, secure, moderate, flat) | |
| sturdy(adjective, close, hard, tough) | |
| unflinching(adjective, flat, firm, harsh) | |
| authoritarian(adjective, hard, tough, severe) | |
| true(adjective, smooth, tough, flat) |
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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> |