sourness
noun /ˈsaʊənəs/
/ˈsaʊərnəs/
[uncountable]- a taste like that of a lemon or of fruit that is not ready to eat
- the sourness of the fruit
- an unpleasant taste or smell, especially of milk, because it is not fresh
- He sniffed the milk for a hint of sourness.
- the fact of not being cheerful; the fact of being unfriendly and unpleasant
- his increasing sourness