- Definitions|1
- Thesaurus|748
- Abbreviations|0
110 entries under adjective topic. ×
| stable | |
| stiff(strong, hard, severe, firm) | |
| toughened(strong, tough) | |
| persistent | |
| definite(severe, firm, harsh, solid) | |
| fixed | |
| incorruptible(strong, tough) | |
| inflexible(strong, hard, severe, firm) | |
| invulnerable(strong, tough) | |
| long-lasting | |
| perdurable(strong, tough) | |
| perennial | |
| resilient(strong, hard, solid, stiff) | |
| set(severe, firm, harsh, solid) | |
| unbending | |
| unchangeable | |
| undying | |
| molded(strong, hard, solid, stiff) | |
| binding | |
| brawny(strong, hard, solid, stiff) |
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| APA | Smart Define. (2016). unbreakable thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unbreakable/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "unbreakable thesaurus" https://smartdefine.org/unbreakable/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, unbreakable thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unbreakable/thesaurus/synonyms>. |
| MLA | Smart Define. "unbreakable thesaurus" 5 January 2016. Web. 26 September 2026. <https://smartdefine.org/unbreakable/thesaurus/synonyms> |