Making, or having the disposition to make, exorbitant claims of rank or estimation; giving one's self an undue degree of importance; assuming; haughty; -- applied to persons.

Containing arrogance; marked with arrogance; proceeding from undue claims or self-importance; -- applied to things; as, arrogant pretensions or behavior.

having or showing feelings of unwarranted importance out of overbearing pride; "an arrogant official"; "arrogant claims"; "chesty as a peacock"

Arrogant is an adjective that may refer to having excessive pride in oneself. A person who is arrogant often exaggerates one's own worth or importance in an overbearing manner.