grumpy

As adjectives the difference between grumpy and odd

is that grumpy is unhappy, dissatisfied and/or irritable while odd is single; sole; singular; not having a mate.

As adjectives the difference between grumpy and unhappy

is that grumpy is unhappy, dissatisfied and/or irritable while unhappy is not happy; sad.

As adjectives the difference between gruff and grumpy

is that gruff is having a rough, surly, and harsh demeanor and nature while grumpy is unhappy, dissatisfied and/or irritable.

As a verb gruff

is to speak gruffly.

As adjectives the difference between grumpy and touchy

is that grumpy is unhappy, dissatisfied and/or irritable while touchy is (of a situation) extremely sensitive or volatile; easily disturbed to the point of becoming unstable; requiring caution or tactfulness.

As adjectives the difference between crotchety and grumpy

is that crotchety is cranky, disagreeable, or stubborn, especially if prone to odd whims or fancies while grumpy is unhappy, dissatisfied and/or irritable.

As adjectives the difference between melancholy and grumpy

is that melancholy is affected with great sadness or depression while grumpy is unhappy, dissatisfied and/or irritable.

As a noun melancholy

is (historical) black bile, formerly thought to be one of the four "cardinal humours" of animal bodies.

Grumpy is a synonym of ornery.

As adjectives the difference between ornery and grumpy

is that ornery is cantankerous, stubborn, disagreeable while grumpy is unhappy, dissatisfied and/or irritable.

As an adjective grumpy

is unhappy, dissatisfied and/or irritable.

As a verb irritate is

(lb) to provoke impatience, anger, or displeasure.

As adjectives the difference between grumpy and bitter

is that grumpy is unhappy, dissatisfied and/or irritable while bitter is having an acrid taste (usually from a basic substance).

As a noun bitter is

a liquid or powder, made from bitter herbs, used in mixed drinks or as a tonic.

As a verb bitter is

to make bitter.

As adjectives the difference between grumpy and cruel

is that grumpy is unhappy, dissatisfied and/or irritable while cruel is not nice; mean; heartless.

As a verb cruel is

to spoil or ruin (one's chance of success.