- an ardent and enthusiastic supporter of some person or activity
- fancier: a person having a strong liking for something
- Enthusiasm originally meant or possession by a divine afflatus or by the presence of a god. Johnson's Dictionary, the first comprehensive dictionary of the English language, defines enthusiasm as "a vain belief of private revelation; a vain confidence of divine favour or communication. ...
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- (The Enthusiasts) The Enthusiasts are a Canadian garage rock band from Winnipeg, Manitoba, active from 1963 to 1972. considered one of the most influential underground Canadian Rock groups of the 20th Century, the bands style paved the way for the first waves of Canadian Punk Rock and Art Rock. ...
- A person filled with or guided by enthusiasm; A person exhibiting over-zealous religious fervour
- someone who is very keen about something, such as a hobby or sport