testy

Glum is a related term of testy.

As a noun glum

is light.

As an adjective testy is

easily annoyed, irritable.

Changeable is a related term of testy.

As adjectives the difference between changeable and testy

is that changeable is capable of being changed while testy is easily annoyed, irritable.

As a verb displeased

is past tense of displease.

As an adjective testy is

easily annoyed, irritable.

As adjectives the difference between testy and delicious

is that testy is easily annoyed, irritable while delicious is pleasing to taste; tasty.

Mopish is a related term of testy.

As adjectives the difference between mopish and testy

is that mopish is given to moping while testy is easily annoyed, irritable.

As adjectives the difference between testy and angry

is that testy is easily annoyed, irritable while angry is displaying or feeling anger.

As adjectives the difference between testy and peckish

is that testy is easily annoyed, irritable while peckish is (colloquial) mildly hungry1860 john camden hotten [http://booksgooglecom/books?id=kfo3aqaaiaaj&dq=flabberghast&source=gbs_navlinks_s a dictionary of modern slang, cant, and vulgar words] page 188.

As a verb attest

is to affirm to be correct, true, or genuine.

As an adjective testy is

easily annoyed, irritable.

As adjectives the difference between testy and fractious

is that testy is easily annoyed, irritable while fractious is given to troublemaking.

Short-tempered is a related term of testy.

As adjectives the difference between short-tempered and testy

is that short-tempered is of or pertaining to a person who is easily angered, who is known to frequently lose his or her temper while testy is easily annoyed, irritable.