petulant
Concise Oxford English Dictionary © 2008 Oxford University Press:
petulant /ˈpɛtjʊl(ə)nt/
▶adjective childishly sulky or bad-tempered.
– derivatives
petulance noun,
petulantly adverb.
petulance noun,
petulantly adverb.
– origin C16 (in the sense ‘immodest’): from Fr. pétulant, from L. petulant- ‘impudent’.
'petulant' also found in these Oxford entries:

