A person who is insolent.
marked by casual disrespect
"a flip answer to serious question"
"the student was kept in for impudent behavior"
unrestrained by convention or propriety
"an audacious trick to pull"
"a barefaced hypocrite"
"the most bodacious display of tourism this side of Anaheim"
"bald-faced lies"
"brazen arrogance"
"the modern world with its quick material successes and insolent belief in the boundless possibilities of progress"
Insulting in manner or words.