insolent
Definitions
Showing a rude and arrogant lack of respect.
Boldly disrespectful in speech or conduct.
Examples
The teacher sent the student to the principal's office for his insolent behavior in class.
She was shocked by the insolent tone the waiter used when she asked for a glass of water.
It is considered highly insolent to interrupt a speaker during a formal presentation.
Synonyms
impudent audacious brazen cheeky disrespectful impertinent rude