Meaning of the word "be full of oneself" in English

What does "be full of oneself" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

be full of oneself

US /bi fʊl əv wʌnˈsɛlf/
UK /bi fʊl əv wʌnˈsɛlf/

Idiom

to be conceited or arrogant

Example:
He tends to be full of himself after winning a competition.
Don't be so full of yourself; there are other talented people here too.