As adjectives the difference between grumpy and grouchy
is that grumpy is unhappy, dissatisfied and/or irritable, a word which is particularly applied to babies and children or adults who are acting childishly while grouchy is irritable; easily upset; angry; tending to complain.
What's the difference between grumpy and moody?
As adjectives the difference between grumpy and moody
is that grumpy is unhappy, dissatisfied and/or irritable while moody is given to sudden or frequent changes of mind; temperamental.
What is the synonym of grumpy?
bad-tempered, ill-tempered, short-tempered, crotchety, crabby, crabbed, tetchy, testy, waspish, prickly, peppery, touchy, irritable, irascible, crusty, cantankerous, curmudgeonly, bearish, surly, churlish, ill-natured, ill-humoured, peevish, cross, fractious, disagreeable, pettish.