but good
Thoroughly or completely. That team underestimated us, and we beat them but good. My mother always notices every speck of dust in my house, so I was sure to clean it but good before she came to visit.
but good
severely; thoroughly. She told him off but good. Joe beat up Bill but good.
but good
Emphatically, thoroughly, as in Ruth decided to clean up the whole yard but good. The word but in this colloquialism functions as an intensive. Also see and how.
but good
Informal Used as an intensive: The pipe started to leak but good.