What is grumpy meaning?

The term "grumpy" usually means being in a bad mood or irritable. A person who is described as grumpy is generally perceived as easily annoyed or displeased and tends to complain or criticize often. The word grumpy is often associated with older people who may display a lack of patience or tolerance for the actions and behaviors of others. However, it can also be used to describe anyone who acts sour, moody, or unapproachable.