know for a fact

To have definitive knowledge of something. I know for a fact that he cheats in cards! I saw the ace up his sleeve. My mom says she knows for a fact that I'm getting the internship at her company, but I won't believe it until the recruiter calls me.

Common Names:

Name	Pronounced	Usage
Gabriele (1)	gah-BRYE-le	Italian
Myfanwy	-	Welsh
PhƯỢNg	-	Vietnamese
Jurica	-	Croatian, Slovene
Celio	CHE-lyo (Italian), THE-lyo (Spanish), SE-lyo (Latin American Spanish), SE-lyoo (Portuguese)	Italian, Spanish, Portuguese
Manola	mah-NO-lah	Spanish