alter ego
al‧ter e‧go /ˌæltər ˈiːɡəʊ, ˌɔːl- $ ˌæltər ˈiːɡoʊ, ˌɒːl-/
noun [countable]
Gissing used his fictional alter ego to attack Victorian morals.
2. someone you trust and who has similar opinions, attitudes etc:
Mrs Reagan was widely regarded as the President’s alter ego.
al‧ter e‧go /ˌæltər ˈiːɡəʊ, ˌɔːl- $ ˌæltər ˈiːɡoʊ, ˌɒːl-/
noun [countable] Date: 1500-1600
Language: Latin
Origin: __other I__
1. sb’s alter ego an invented person that you use to represent part of your character that is very different from your usual one:Language: Latin
Origin: __other I__
2. someone you trust and who has similar opinions, attitudes etc: