1sour 
/ˈsawɚ/ adjective
sour·er; sour·est /ˈsawɚ/ adjective [also more sour; most sour] 1 : having an acid taste that is like the taste of a lemon : tart
▪ sour pickles ▪ a sour apple ▪ a slightly sour taste — see also sweet-and-sour 2 : having the unpleasant taste or smell of food that is no longer fresh
▪ The milk had turned/gone sour. ▪ The cream smells sour. ▪ a sour odor ▪ sour [=bad] breath 3 : unpleasant or unfriendly
▪ a sour, cynical person ▪ He made a sour face. ▪ Their relationship ended on a sour note. [=ended unpleasantly] 4 informal : bad or wrong
▪ Their relationship had turned/gone sour. ▪ All their investments went sour.
▪ sour pickles ▪ a sour apple ▪ a slightly sour taste — see also sweet-and-sour
▪ The milk had turned/gone sour. ▪ The cream smells sour. ▪ a sour odor ▪ sour [=bad] breath
▪ a sour, cynical person ▪ He made a sour face. ▪ Their relationship ended on a sour note. [=ended unpleasantly]
▪ Their relationship had turned/gone sour. ▪ All their investments went sour.
sour on
informal : having a bad opinion of (something)
▪ She was sour on politics in general.
▪ She was sour on politics in general.
— sour·ly adverb
▪ She noted sourly that something was wrong.
▪ She noted sourly that something was wrong.
— sour·ness noun [noncount]
▪ The dish gets its sourness from lemons.
▪ The dish gets its sourness from lemons.
