swear blind

(british & Australian) also swear up and down/black and blue (American & Australian/Australian)

to say that something is completely true, especially when someone does not believe you He swore up and down that he'd never seen the letter. If I ask her, I know she'll swear blind she locked the door. He swore black and blue he had nothing to do with the missing money.

Common Names:

Name	Pronounced	Usage
Kismet	-	Turkish
Hanne (1)	HAN-ne (Danish), HAHN-ne (Norwegian), HAH-nə (German), HAHN-nə (Dutch)	Danish, Norwegian, German, Dutch
Stefan	SHTE-fahn (German), STAY-fahn (Dutch), STE-fahn (Polish)	German, Swedish, Norwegian, Danish, Dutch, Polish, Bulgarian, Macedonian, Serbian
Elina	E-lee-nah (Finnish), e-LEE-nah (Swedish)	Finnish, Swedish
Immaculata	-	Irish
Ming	-	Chinese