enthusiast
//ɪnˈθjuːziæst//
Noun
enthusiastSingular
enthusiastsPlural
1
A person who is very interested in and involved with a particular activity or subject.
He is a car enthusiast who spends every weekend working on his vintage collection.
2
A person who is highly passionate and devoted to a hobby, cause, or pursuit.
He is a car enthusiast who spends every weekend restoring vintage vehicles.