Grump

He's a grump.

Tom is a grump.

That grump is quick to blow his top when you tease him.

Tom is an old grump.

What an old grump you are.

If you're not taking Action to change the situation, either sit in a grump or Accept it.

Grumping to himself as he made up his own bed, Bradly thought, "Have to wash that blanket; young blighter going to bed with all that mud on his feet."