| APA | Smart Define. (1970). horrible dictionary of synonyms and antonyms thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/horrible_dictionary_of_synonyms_and_antonyms/thesaurus/antonyms |
| Chicago | Smart Define. 1970. "horrible dictionary of synonyms and antonyms thesaurus" https://smartdefine.org/horrible_dictionary_of_synonyms_and_antonyms/thesaurus/antonyms (accessed September 28, 2026). |
| Harvard | Smart Define 1970, horrible dictionary of synonyms and antonyms thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/horrible_dictionary_of_synonyms_and_antonyms/thesaurus/antonyms>. |
| MLA | Smart Define. "horrible dictionary of synonyms and antonyms thesaurus" 1 January 1970. Web. 28 September 2026. <https://smartdefine.org/horrible_dictionary_of_synonyms_and_antonyms/thesaurus/antonyms> |