Grumpy means in a bad mood and complaining about everything. Nothing is quite right, and you will be hearing about it.
It is a gentle word for a mild fault, and it is one of the few insults you can use affectionately about somebody you love. It suits mornings, hunger and old age especially — a grumpy old man is practically a fixed phrase. The noun grump means both the mood and the person having it. Grouchy and cranky are the close cousins, and the underlying verb, to grumble, is the sound of it.
1adjectivegrumpyBad-tempered and inclined to complain.
“He is always grumpy before breakfast.”
Also accepted in games: grouchy
From grump + -y.
Etymology from Wiktionary, CC BY-SA