gol dern
and gol dangRur. God damn.; God-damned. Gol dern it, Mary, shut the screen door! Them bugs is get-tin' in here in droves. The gol dang car's in the shop again.
That's for dang sure!
Rur. That is quite certain! (The formulaic response to That's for sure!. The accent is always on the dang.) Tom: That's for sure! Jane: That's for dang sure! Sally: We'll be there and that's for sure! Bill: Yup! That's for dang sure!