Asinine (adjective)

1. Extremely foolish or stupid.
2. Showing a lack of good sense or judgement.

Origin:

Derived from the latin word "asinus" meaning donkey. it is used to describe something as foolish or stupid.

Examples:

1. He made an asinine mistake that cost the company a lot of money.
2. The asinine remark was met with silence and disbelief.
3. Her asinine behavior was unacceptable and she was fired.
4. The asinine proposal was rejected without consideration.
5. He had an asinine grin on his face, completely oblivious to the seriousness of the situation.