Definitions

1. noun

An enthusiastic and devoted fan of a particular person, thing, or group, often to an excessive degree.

“He was known as a huge fanboy of the science fiction series and had a vast collection of memorabilia.”

2. noun

A person who is excessively enthusiastic or devoted to a particular interest or hobby, often to the point of being seen as obsessive.

“The fanboy community was abuzz with excitement over the upcoming release of the new video game.”