I'll warrant (you)
idiomPart ofwarrant
I'll warrant (you) — idiom
1. Used to say with confidence that something is true, or to reassure someone about
1.idiom
Definition
Used to say with confidence that something is true, or to reassure someone about a fact — often implying personal knowledge or experience.
Example
I'll warrant you, no one in this town knows the old forest paths better than I do.