tetchy
Tetchy (adj) means meaning much the same as touchy: quick to become annoyed or irritated, peevish, testy and irascible; figuratively, also very sensitive and hard to handle, operate or work with.
Etymology
Of uncertain origin. It is first recorded as teachie in the 1597 first quarto versions of Romeo and Juliet and Richard III, and may have been coined by Shakespeare. It has also been variously traced to English tetch (“tantrum, fit of anger”), to Scots tache (“blotch, fault”), and to Middle English tatch (“blemish”), among others, under the influence of touchy.