flatter (oneself)

To hold a vain, self-congratulatory, and exaggeratedly high opinion of oneself and/or one's achievements. Yeah, don't flatter yourself—she only asked you out to dinner because she wants to ask you about your brother. Gaston likes to flatter himself that he's the best man in town, but everyone knows he's just a pompous jerk.

Common Names:

Name	Pronounced	Usage
Marius	MER-ee-əs (English), MAR-ee-əs (English), MAH-ree-uws (German)	Ancient Roman, Romanian, German, Dutch, Norwegian, Danish, French
Tsubaki	tsoo-bah-kee	Japanese
Juniper	JOON-ə-pər	English (Rare)
Martha	MAHR-thə (English)	English, Swedish, Norwegian, Danish, Dutch, German, Greek, Biblical, Old Church Slavic, Biblical Lat
Halkyone	-	Greek Mythology
Gaios	-	Ancient Greek, Biblical Greek