/ˌæltər ˈiːɡoʊ/
alter ego
BrE /ˌæltər ˈiːɡəʊ/
NAmE /ˌæltər ˈiːɡoʊ/
BrE /ˌɔːltər ˈiːɡəʊ/
NAmE /ˌɔːltər ˈiːɡoʊ/
(
plural
alter egos) (from Latin)
a person whose personality is different from your own but who shows or acts as another side of your personality
Superman’s alter ego was Clark Kent.
a close friend who is very like yourself