Synonyms and Antonyms of alter ego
a person who has a strong liking for and trust in another
- Over the years the state's other senator became his alter ego as well as his political ally.
amigo, buddy, chum, compadre, comrade, confidant, confidante, crony, familiar, friend, intimate, pal
associate, cohort, colleague, companion, fellow, hearty, hobnobber, partner, peer, sport
blood brother, brother, main man, sister
abettor (also abetter), accomplice, ally, collaborator, confederate
benefactor, supporter, sympathizer, well-wisher
something or someone that strongly resembles another
- The hero of the novel is clearly the author's alter ego.
carbon, carbon copy, clone, counterpart, double, duplicate, duplication, facsimile, image, likeness, look-alike, match, mirror image, picture, replica, ringer, spit, spitting image, twin