| APA | Smart Define. (2016). matter-of-course thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/matter-of-course/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "matter-of-course thesaurus" https://smartdefine.org/matter-of-course/thesaurus/antonyms (accessed October 2, 2026). |
| Harvard | Smart Define 2016, matter-of-course thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/matter-of-course/thesaurus/antonyms>. |
| MLA | Smart Define. "matter-of-course thesaurus" 1 April 2016. Web. 2 October 2026. <https://smartdefine.org/matter-of-course/thesaurus/antonyms> |