Synonyms of grumbly

1 Syllable

cross, sour, crying

2 Syllables

grousing, fretful, grumbling, whiny, carping, snappy, scrappy, whining, edgy, bearish, waspish, captious, waspy, testy, wailing, uptight

3 Syllables

complaining, plaintive, whimpering, critical, petulant, querulous, censorious, bemoaning, deploring, lamenting, fault-finding

4 Syllables

dissatisfied, discontented, irritable, cantankerous