Irritated, impatient, or exasperated; peevish: a testy cab driver; a testy refusal to help. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "testy" in a sentence
"She seems to think getting testy is that same as showing strength."
"She comes back, a little testy: "Pollo is the Spanish word for CHICKEN!""
"I especially loved the way she said "testy" - a defining Venetian characteristic"