Self-importance (3)
'self-importance' is the definition.
(I know that self-importance can be written as ego)
This is all the clue.
(Other definitions for ego that I've seen before include "Self-esteem or self-importance" , "Inner self" , "Sense of identity" , "One's self image" , "number one" .)
'self-importance' is the definition.
(I know that self-importance can be written as egotism)
This is the entire clue.
(Other definitions for egotism that I've seen before include "self-regard" , "Self-centredness" , "Self-obsession" , "Self-love" , "Obsession with oneself" .)