Self-satisfied (adjective)

Feeling pleased with oneself and one's own actions, often to the point of complacency.

Origin:

Combination of self and satisfied, meaning feeling pleased with oneself and one's own actions.

Examples:

1. The self-satisfied businessman basked in his success.
2. She couldn't stand the self-satisfied look on his face.
3. His self-satisfied attitude made it hard to work with him.
4. I can't stand people who are always self-satisfied.
5. He was too self-satisfied to see the errors in his plan.