The team's victory was 'soured' by an injury to one of their best players.
The disappointing result of the election 'soured' her 'on' politics.
Their relationship ended 'on a sour note'. [=ended unpleasantly]
(..) with the dancing girl, was'nt it? What exactly did that mean? I'll explain it to you. Remember Lil's wearing a sour face. What do you mean? Her face had a sour look on it. We're going to have problems with the local authorities. They're not going to be (..)1992 Twin Peaks: Fire Walk with Me