grumpy//ˈɡrʌmpi//B1Frequency Level 12ColloquialAdjectivegrumpyCanonical formgrumpierComparativegrumpiestSuperlative1Bad-tempered and irritable; easily annoyed or complaining.My grandfather is always grumpy in the morning before his coffee.SynonymcrankyirritablemoodyAntonymcheerfulpleasant
