| lover(noun, friend, buddy, bud, confidante) | |
| man Friday | |
| other self | |
| parallel(noun, match, equivalent) | |
| picture(noun, clone, look-alike) | |
| playmate(noun, associate, companion, friend, contemporary) | |
| reciprocal(noun, companion, friend, contemporary, acquaintance) | |
| right-hand man(noun, assistant) | |
| second self(noun, personality) | |
| simulacrum(noun, clone, look-alike) | |
| sister(noun, friend) | |
| supporter | |
| vice | |
| well-wisher(noun, associate, companion, ally, comrade) | |
| twin(noun, match, double, companion, friend) | |
| Achates | |
| advocate | |
| alter | |
| alternate | |
| alterum |
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Alter_ego on
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| APA | Smart Define. (2015). alter ego thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/alter_ego/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "alter ego thesaurus" https://smartdefine.org/alter_ego/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, alter ego thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/alter_ego/thesaurus/synonyms>. |
| MLA | Smart Define. "alter ego thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/alter_ego/thesaurus/synonyms> |