go/turn sour
go sour
To become unpleasant or troubling. Those two are bickering all the time now—I hope their relationship hasn't gone sour. Don’t bring up politics unless you want things to go sour real fast!
turn sour
To become unpleasant or troubling. Those two are bickering all the time now—I hope their relationship hasn't turned sour. Don’t bring up politics unless you want things to turn sour real fast!
go sour
Fig. to turn bad or unpleasant. It looks like all my plans are going sour. My whole life is going sour right now.
go/turn ˈsour
become less enjoyable, pleasant or good: Relations between the two nations have recently gone sour.go sour
in. to turn bad or unpleasant. My whole life is going sour right now.