| constantly | |
| contemporary | |
| continually | |
| current | |
| daily | |
| deceitful | |
| despairingly | |
| directly | |
| droopy | |
| eternally | |
| ever | |
| everlastingly | |
| executory | |
| expansively | |
| extant | |
| following | |
| forever | |
| forthcoming | |
| forthwith | |
| frequently |
For more, visit
Once on
Power Thesaurus
| APA | Smart Define. (2016). once thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/once/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "once thesaurus" https://smartdefine.org/once/thesaurus/antonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, once thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/once/thesaurus/antonyms>. |
| MLA | Smart Define. "once thesaurus" 30 March 2016. Web. 24 September 2026. <https://smartdefine.org/once/thesaurus/antonyms> |