Origin of tetchyfrom Late Middle English teche, touchy, probably from ME, a mark, quality from OFr, spot, mark from Vulgar Latin an unverified form tecca from Frankish an unverified form tekka from an unverified form t?kan; akin to Old English tacn, token
adjectivetetch·i·er, tetch·i·est, also tech·i·er or tech·i·est
Origin of tetchyProbably from Middle English tache, teche blemish (influenced by touchy ) from Old French tache, teche from Vulgar Latin tacca from Gothic taikns sign ; see deik- in Indo-European roots.
(comparative tetchier, superlative tetchiest)
1592, teachie, in Romeo and Juliet, Act I, Scene iii, line 32.
Presumably from Middle English tatch, tache, tecche, teche (“blemish"), influenced by touchy, from Old French tache, teche (Modern French tache), from Vulgar Latin *tacca, from Gothic ð„ðŒ°ðŒ¹ðŒºðŒ½ðƒ (taikns, “sign") (compare Old English tacen (“sign, token"), Modern English token), from Proto-Indo-European *deik-.