Their relationship 'got/turned nasty' soon after they were married.
That 'nasty' old man yelled at me just for stepping on his lawn!
a violent movie with a lot of 'nasty' [='bad, dirty'] language
(..) I always say. - Well, it's no way to behave in front ofa princess. - - Thanks. - She's as nasty as you are. You know, you're not exactly what I expected. Maybe you shouldn'tjudge people before you get to know them. La liberte! (..)2001 Shrek