The definition of sour is something with an acidic taste, or someone who is resentful or angry. ... A person with a grumpy and rude personality who is angry all the time is an example of someone who would be described as having a sour personality.

What does it mean if a person is sour?

Someone who is sour is bad-tempered and unfriendly. She made a sour face in his direction.

What is sour mood?

4 (of a person's temperament) sullen, morose, or disagreeable. 5 (esp. of the weather or climate) harsh and unpleasant. 6 disagreeable; distasteful. a sour experience.