tetch·y also tech·y (tĕchē)
adj. tetch·i·er, tetch·i·est also tech·i·er or tech·i·est
Peevish; testy: "As a critic gets older, he or she usually grows more tetchy and limited in responses" (James Wolcott).
[Probably 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 the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.