cranky vs testy

cranky and testy both are adjectives.

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

As adjectives, cranky and testy are synonyms defined as:

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

cranky (adjective)	testy (adjective)
easily irritated or annoyed	easily irritated or annoyed
(used of boats) inclined to heel over easily under sail