Unreasonably irritable or ill-tempered; peevish.(adjective)
Contemptuous in speech or behavior.(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 "petulant" in a sentence
"Jones declined to characterize Astro as "arrogant," saying he might use the term "petulant" instead."
"Instead they are engaging in petulant revenge canceling even national security hearings just to give the Democrats, and the American people, the finger."
"To call him petulant is kind of like the pot calling the kettle black."