Arrogant (adjective)

1. Having or revealing an exaggerated sense of one's own importance or abilities.
2. Having a feeling of superiority that shows itself in an overbearing attitude.

Origin:

Late middle english (in the sense "assuming, taking liberties"): from old french arrogant, from latin arrogant- "assuming, undertaking", from the verb arrogare, from ad- "to" + rogare "ask".

Examples:

1. He had an arrogant attitude and thought he was better than everyone else.
2. She was arrogant and refused to listen to other people's opinions.
3. His arrogant behavior made him many enemies.
4. The arrogant manager was eventually fired.
5. His arrogant remark made people dislike him.