1. Rude, disrespectful, or impertinent conduct that shows a lack of respect for authority or social norms
His insolent behavior toward the teacher resulted in detention.
O seu comportamento insolente para com o professor resultou em castigo.
2. Arrogant or contemptuous demeanor that challenges or defies conventional standards of politeness
The employee's insolent behavior got her fired.
O comportamento insolente da funcionária resultou na sua demissão.