Definition

The insufferable fusion of ego and false expertise where someone confidently opines on topics they barely understand. It's overconfidence masquerading as knowledge, usually from someone who Googled it five minutes ago.

Example Usage

Frank keeps going on about fine wines, but honestly, I think it's just egotise—he read one article last week.

Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=egotise&defid=16851060)