1. Rude and disrespectful: This is the most common meaning. Someone who is impertinent is being rude and disrespectful, often by making inappropriate comments or asking intrusive questions.
Example: "The student's impertinent remarks about the teacher's appearance were met with a stern warning."
2. Irrelevant or inappropriate: Impertinent can also mean something that is not relevant or appropriate to the situation.
Example: "The lawyer's questions about the defendant's personal life were considered impertinent to the case."
3. Arrogant and presumptuous: Impertinent can also convey a sense of arrogance and overstepping boundaries.
Example: "He was so impertinent as to tell the CEO what he should do."
In all cases, "impertinent" suggests a lack of proper manners and social awareness.