tetchy vs cranky

tetchy and cranky both are adjectives.

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

As adjectives, tetchy and cranky are synonyms defined as:

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

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