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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")
идиома
Примеры
The meeting went sour when they started blaming each other.
02
(of food or drinks) to become unpleasant in taste or smell
коллокация
Примеры
I left the milk out overnight, and it started to go sour.
