Petulant - Jill C.

Pronunciation - pet·u·\-lənt\
Definition - marked by displays of rudeness or ill temper
Function - adjective or adverb (petulantly)
Etymology - Latin or Middle French; Middle French, from Latin petulant-, petulans; akin to Latin petere to go to, attack, seek; Date: 1598
Synonym - irritable
Antonym - pleasant
Sentence - Kimberly was in such a petulant manner that she punched a wall in fury.

Citations -
"petulant." Merriam-Webster Online Dictionary. 2009. Merriam-Webster Online. 10 March 2009
http://www.merriam-webster.com/dictionary/petulant

petulant. (n.d.). Roget's 21st Century Thesaurus, Third Edition.
Retrieved March 10, 2009, from Thesaurus.com website:
http://dictionary.reference.com/browse/petulant

Irritated Chef Ramsey. Digital image. Mail Online.com. 4 Aug. 2008. 11 Mar. 2009
http://i.dailymail.co.uk/i/pix/2008/08/04/article-0-017E50D700000578-548_224x423.jpg