Boorishly

She drove boorishly, cutting off other drivers and ignoring traffic signals.

The student acted boorishly by not following the classroom rules.

He acted boorishly towards his date, insulting her appearance.

The tourist behaved boorishly, loudly complaining about the local culture.

The guest behaved boorishly at the party, making everyone uncomfortable.

The customer complained boorishly to the waiter about his food.