| APA | Smart Define. (2011). free state thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/free_state/thesaurus/antonyms |
| Chicago | Smart Define. 2011. "free state thesaurus" https://smartdefine.org/free_state/thesaurus/antonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2011, free state thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/free_state/thesaurus/antonyms>. |
| MLA | Smart Define. "free state thesaurus" 26 April 2011. Web. 25 September 2026. <https://smartdefine.org/free_state/thesaurus/antonyms> |