To be excessively proud or arrogant.

To overestimate one's own abilities or worth.

To presume too much about oneself.

To display unwarranted self-importance or confidence.

Excessively proud or arrogant.

Overconfident in one's abilities or opinions.

Disdainful of others' perspectives and feelings.

Unreasonably self-assured; lacking humility.

Exhibiting hubris beyond acceptable limits.