grumpy

adjective
UK /ˈɡrʌm.pi/
US /ˈɡrʌm.pi/

Feeling a little angry or unhappy.

The baby gets grumpy when he is tired.


OTHER MEANINGS

2. In a bad mood and likely to complain about small things.

My grandpa is grumpy in the morning before his coffee.

3. Showing that someone is not happy, like a grumpy face.

She made a grumpy face when it started to rain.

4. Often used for a person or animal that is easily annoyed.

The grumpy cat hissed at everyone who walked by.