insolent

/ˈɪnsə.lənt/adjective

Rude and disrespectful in words or behavior.

Example sentence

“His insolent reply earned him a detention.”

Typically describes juniors defying seniors: an insolent student, an insolent reply. 'Rude' has no such hierarchy built in.

Related words

installTo set up equipment or software and make it ready for use.insipidDull and bland; lacking flavor, character, or interest.installmentOne part of something delivered, paid, or published in a series at scheduled intervals.insinuateTo suggest something unpleasant in an indirect way instead of saying it outright.instigateTo set an action or event in motion, especially by urging or encouraging others.insightfulShowing a deep and clear understanding of something.