32 entries under adjective topic. ×
| invariable | |
| long-lasting | |
| long-lived | |
| longstanding | |
| overall | |
| perennial | |
| persistent | |
| prolonged | |
| sedulous | |
| substantial | |
| sure | |
| tough |
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| APA | Smart Define. (2016). interim thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/interim/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "interim thesaurus" https://smartdefine.org/interim/thesaurus/antonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, interim thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/interim/thesaurus/antonyms>. |
| MLA | Smart Define. "interim thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/interim/thesaurus/antonyms> |