| APA | Smart Define. (1970). failing health thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/failing_health/thesaurus/antonyms |
| Chicago | Smart Define. 1970. "failing health thesaurus" https://smartdefine.org/failing_health/thesaurus/antonyms (accessed October 1, 2026). |
| Harvard | Smart Define 1970, failing health thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/failing_health/thesaurus/antonyms>. |
| MLA | Smart Define. "failing health thesaurus" 1 January 1970. Web. 1 October 2026. <https://smartdefine.org/failing_health/thesaurus/antonyms> |