testy vs fractious

testy and fractious both are adjectives.

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

As adjectives, testy and fractious are synonyms defined as:

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

testy (adjective)	fractious (adjective)
easily irritated or annoyed	unpredictably difficult in operation; likely to be troublesome
	stubbornly resistant to authority or control
	easily irritated or annoyed