mardy
adjective
[ ˈmɑːdi ]
• in a petulant bad mood; sulky or grumpy.
• "you can get all mardy about it if you like"
mardy
noun
• a sulky mood or fit of petulant bad temper.
• "he stormed off the pitch in a mardy after the final whistle"
Origin:
late 19th century (as noun, in the sense ‘spoilt child’): probably from dialect marred (from mar), describing a spoilt, overindulged, or badly behaved child.