to go sour
01
(of situations, moods, or relationships) to become unpleasant or unsuccessful
![to [go] sour definition and meaning](https://cdn.langeek.co/photo/41295/original/?type=jpeg "to [go] sour definition and meaning")
Idiom
Exempel
Things started to go sour between the business partners when financial issues arose.
02
(of food or drinks) to become unpleasant in taste or smell
CollocationExempel
The cream in the recipe went sour, so I had to discard it and start over.
