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
Matthieu	ma-TYU	French
Tertius	TUR-shəs (English)	Ancient Roman
Terance	TER-ənts	English
Lucas	LOO-kəs (English), LUY-kahs (Dutch), luy-KAH (French), LOO-kəsh (Portuguese), LOO-kahs (Spanish)	English, Dutch, French, Portuguese, Spanish, Biblical Latin
Dashiell	-	English (Rare)
Jaroslava	-	Czech, Slovak