- Definitions|1
- Thesaurus|187
- Abbreviations|0
172 entries under adjective topic. ×
| formal(tough, firm, fixed, distant) | |
| hang tough(tough, sharp, difficult, wild) | |
| hanging tough(expression, firm, determined, usual) | |
| hard(tough, severe, sharp, firm) | |
| hard-line(tough, severe, difficult, stiff) | |
| hard as nails(expression, idiom, tough, firm) | |
| headstrong(hard, tough, sharp, firm) | |
| hold the fort(expression, idiom, tough, firm) | |
| hold the line(expression, idiom, tough, firm) | |
| immured(restrained, captive, confined, enclosed) | |
| incompliant(tough, severe, firm, wild) | |
| incurable(tough, difficult, wild, awkward) | |
| indocile(tough, difficult, wild, awkward) | |
| indomitable(tough, difficult, wild, awkward) | |
| inelastic(tough, severe, firm, harsh) | |
| inexorable(tough, severe, firm, harsh) | |
| inflexible(severe, firm, steady, fixed) | |
| insoluble(tough, difficult, wild, awkward) | |
| intent(firm, determined, usual, regular) | |
| intractable(tough, firm, difficult, determined) |
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| APA | Smart Define. (2013). locked in thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/locked_in/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "locked in thesaurus" https://smartdefine.org/locked_in/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2013, locked in thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/locked_in/thesaurus/synonyms>. |
| MLA | Smart Define. "locked in thesaurus" 18 May 2013. Web. 28 September 2026. <https://smartdefine.org/locked_in/thesaurus/synonyms> |