Self-effacing (adjective)

Tending to minimize or conceal one's own importance or achievements.

Origin:

Combination of self and effacing, meaning tending to minimize or conceal one's own importance.

Examples:

1. He had a self-effacing personality and was always quick to credit others for his own successes.
2. Her self-effacing nature made her a popular team member.
3. He was known for his self-effacing humor and humility.
4. The self-effacing way she spoke about her accomplishments made her more likable.
5. His self-effacing attitude made him a good leader because he always put the team first.