for good

US /fɔr ˈɡʊd/
UK /fɔr ˈɡʊd/
"for good" picture
1.

永遠, 徹底

permanently; for always

:
She left the country for good.
永遠地離開了這個國家。
I'm quitting smoking for good this time.
這次我將徹底戒菸。