grumpily
"You haven't done anything at all," she pointed out, a little grouchily.
They were grouchily told not to refer to him in that way.
"What do you mean?" I retorted grouchily.
He insisted, correctly but grouchily, that he had not changed anything.
She reflected a touch grouchily that she was feeling rather unsure about everything.

SMART Vocabulary: related words and phrases

Bad-tempered
argumentative
bad-tempered
be hell on wheelsidiom
be like a bear with a sore headidiom
be spoiling for a fightidiom
grouchy
grumpily
grumpiness
grumpy
have a short fuseidiom
pettishly
petulance
petulancy
petulant
petulantly
surlily
surliness
testily
testiness
testy