Origin of testy. Alteration of Middle English testif, headstrong, alteration (influenced by Middle English -if, variant of -ive, -ive, as in natif, native) of Old French testu, from Old French teste, head, from Late Latin testa, skull; see teston. Related Forms: tes′ti·ly.
http://www.yourdictionary.com/testy
Sunny Boy in the Big City Ramy Allison White. That's all right, that's all right, was the testy rejoinder. Fair Harbor Joseph Crosby Lincoln. She was testy too; but this was owing to the neglect she experienced at the hands of her tribe.
http://www.dictionary.com/browse/testy
Learner's definition of TESTY. : becoming angry or annoyed easily. She grew a little testy [=irritable, (chiefly Brit) tetchy] as the afternoon wore on. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples.
http://www.learnersdictionary.com/definition/testy
(tɛst) n. 1. the means by which the presence, quality, or genuineness of anything is determined: a test of a new product. 2. the trial of the quality of something: to put to the test. 3. a particular process or method for trying or assessing. 4. a set of problems, questions, etc., for evaluating abilities or performance. 5.
http://www.thefreedictionary.com/test
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http://www.thesaurus.com/browse/testy
(tĕst) n. 1. A procedure for critical evaluation; a means of determining the presence, quality, or truth of something; a trial: a test of one's eyesight; subjecting a hypothesis to a test; a test of an athlete's endurance.
http://www.thefreedictionary.com/test
Michael Karpf: When you don’t have climate control on, with three people in the car, things can get a bit testy in there. Thomas Fuller: Never contend with one that is foolish, proud, positive, testy, or with a superior, or a clown, in matter of argument. irritableSpanish.
http://www.definitions.net/definition/testy
Meanawhile, there are headlines about Obama getting “testy” with reporter Brad Watson of WFAA in Dallas. Tale of Two Testy Interviews Howard Kurtz April 18, 2011. I've never seen a government official get quite this testy with a reporter. State Department Aide Tells Reporter to ‘Fuck Off’ Megan McArdle September 23, 2012. This was in November 2005, which means he was already a testy fellow two years before the shooting of Rashad Johnson. A College, a Gun—and a Big Injustice Stanley Crouch June 6, 2009. He was a testy clock-Nazi, the GOP was surprisingly well-briefed—and the outcome was never in doubt.
http://www.dictionary.com/browse/testy
Sample Sentences & Example Usage. When you don’t have climate control on, with three people in the car, things can get a bit testy in there. Never contend with one that is foolish, proud, positive, testy, or with a superior, or a clown, in matter of argument.
http://www.definitions.net/definition/testy
You might feel a bit testy before taking a test, but the words test and testy are unrelated. Feeling testy means being peeved, annoyed, or irritated. The adjective testy is associated with being irritable and on edge.
https://www.vocabulary.com/dictionary/testy
definition of testy
The definition of testy refers to becoming angry or annoyed easily.  Becoming angry or annoyed easily.