50 entries under adjective topic. ×
| persistent | |
| regular | |
| resolute | |
| sempiternal | |
| serious | |
| stable | |
| stationary | |
| steadfast | |
| sure | |
| systematic | |
| thorough | |
| unceasing | |
| unchangeable | |
| undying | |
| unfailing | |
| uniform | |
| unrelenting | |
| unshaken | |
| unvarying | |
| unwavering |
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| APA | Smart Define. (2015). fluctuate thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/fluctuate/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "fluctuate thesaurus" https://smartdefine.org/fluctuate/thesaurus/antonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, fluctuate thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/fluctuate/thesaurus/antonyms>. |
| MLA | Smart Define. "fluctuate thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/fluctuate/thesaurus/antonyms> |