(noun) - Someone who starts something with a great deal of promise, only to finish it poorly.

(verb) - The act of starting with promise, only to finish poorly.

Theo Walcott is an English footballer who makes a habit of beginning with promise, whether on the pitch in a single game, or in his career in general, only to finish disappointingly.

A goth who has been part of the subculture since it originally came about, or a goth over the age of 40.

he is very smart and he is really good at basketball

(noun/verb) - Someone/something that starts with promise, only to finish poorly/To start something with promise, only to finish poorly.

Theo Walcott is a young football player for English club Arsenal FC. He has, throughout his career thus far, made a habit of beginning something with promise, whether a move on the pitch, or a campaign off it, only to end it poorly.

A dip ship who is full of ego and thinks he’s the best at everything but really isn’t he believes everything on the internet also he doesn’t take showers and his breath is worse than rotting garbage

A person who thinks he is good at everything but really isn’t he is full of ego and believes everything on the internet his breath smell worse than rotting garbage