full of oneself
Definition from Wiktionary, the free dictionary
- (idiomatic) Egotistical, believing oneself to be superior to others; preoccupied with one's own work, interests, point of view, etc.
1897, Andrew Lang, chapter 8, in Pickle the Spy:
- I thought it not amiss to write him a line to let him know the regard you had for him, for as I know him to be vastly vain and full of himself I thought this might be a spur to his zeale.