Comparative form of grouchy: more grouchy(adjective)
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Use "grouchier" in a sentence
""She's given up coffee, so she's even grouchier than usual and she's frustrated that her activities on the job are limited," McCormack says, before adding that Shannon could make a pretty good, if unconventional, mom."
"Meantime, he or she falls asleep in class, claims to be too tired to do homework, and seems to get grouchier each day."
"In my grouchier moments I feel that only those who grow some of their own food should write about food production."