‹informal› bet you (used to express confidence or certainty that something is the case or will happen)
• betcha can’t leave without at least one home-made goody from the bakery counter
• I betcha 98% of Americans wouldn’t know who he is.
II. phrases you betcha
‹informal› used to express certainty or as a strongly positive response
• Had she pictured herself in a Broadway role? You betcha
• ‘You have everything under control?’ ‘You betcha!’.