Baduk - בָּדוּק
Literal translation: Tested, checked, inspected
The word baduk is one of those Hebrew words that has a few meanings, one being checked and the other a slang term. This means “for sure” or “I'm sure.”
Like, right before you leave the house you ask your friend, "have you put your mask on?" and the answer is, “Achi, baduk!” - "Yes, of course!"