hubris

noun

1. (countable, uncountable)Excessive arrogance or pride, or presumption; originally (Greek mythology) toward the gods; a feeling of overwhelming and all-encompassing pride.

   “Antitrust prosecutors target big companies that exude hubris.”

   “One would have thought that even Trump, despite all his hubris and egotism, would know better than to jump feet first into America’s most sensitive issue: racial division.”