go sour

go sour (third-person singular simple present goes sour, present participle going sour, simple past went sour, past participle gone sour)

1. (food) To spoil, rot, become sour.
2. (figuratively) To become unpleasing, unpleasant, unsatisfying; unfulfilling to one's wishes.

   The flight went sour after I spilled coffee all over myself.

• (food): go bad

• guroos