give (oneself) airs

To think or behave as though one is superior to others or better than one really is; to have or assume a pretentious or self-aggrandizing attitude. I think John is really a decent fellow at heart, but I really wish he wouldn't give himself such airs about his writing abilities. Stop giving yourself airs, Mary, you're not some world-class actor—you're just an amateur like the rest of us!

Common Names:

Name	Pronounced	Usage
ŠTefanija	shte-FAHN-ee-yah (Croatian)	Slovene, Croatian
Domagoj	-	Croatian
Euthalia	-	Ancient Greek
Harriette	HER-ee-ət, HAR-ee-ət	English
Karena	-	English (Rare)
Nolan	NO-lan	Irish, English