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adj. tes·ti·er, tes·ti·est
Irritated, impatient, or exasperated; peevish: a testy cab driver; a testy refusal to help.
[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.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
n → Gereiztheit f
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007