testy vs tetchy

testy and tetchy both are adjectives.

Word	Noun	Adjective	Verb	Adverb
testy	No	Yes	No	No
tetchy	No	Yes	No	No

As adjectives, testy and tetchy are synonyms defined as:

Other synonyms of testy include cranky, fractious, irritable, nettlesome, peckish, peevish, pettish, petulant, scratchy, techy.

testy (adjective)	tetchy (adjective)
easily irritated or annoyed	easily irritated or annoyed