arrogant
US /ˈer.ə.ɡənt/
UK /ˈer.ə.ɡənt/

1.
having or revealing an exaggerated sense of one's own importance or abilities
:
•
His arrogant attitude made him unpopular with his colleagues.
•
She gave an arrogant smirk after winning the debate.
having or revealing an exaggerated sense of one's own importance or abilities