Unmannerly (adjective)

Not having or showing good manners.

Origin:

The word "unmannerly" is formed from the word "un" and "mannerly" which means having or showing good manners.

Examples:

1. He was considered unmannerly for interrupting the speaker.
2. His unmannerly behavior was not tolerated at the dinner table.
3. She was considered unmannerly for her lack of respect.
4. His unmannerly manners made him unpopular among his peers.
5. She was reprimanded for her unmannerly attitude towards the guests.