Ego (4)
'ego' is the definition.
(I know that ego can be written as self)
This is all the clue.
(Other definitions for self that I've seen before include "Personality" , "one's identity" , "Will perhaps" , "Person's distinct identity" , "Will the writer?" .)
'ego' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for alter that I've seen before include "Amend" , "Become different" , "Alert to change" , "Adapt" , "Make changes to" .)