talk through one’s hat

in. to say baseless things; to speak carelessly and tell lies. You don’t know what you are talking about. You’re just talking through your hat.

Name	Pronounced	Usage
Dione (2)	dee-AHN	English
Fortunata	-	Italian, Spanish, Portuguese, Late Roman
Sidony	-	English (Archaic)
Margaretha	mahr-gah-RE-tah (German)	Dutch, German
Sonya	['səunjə]
Zemfira	-	Tatar, Bashkir, Azerbaijani, Literature