devotee
n. C1 Advanced US //ˌdɛvəˈti// UK //dˌɛvəʊtˈiː// devo·tee
n. a person who is very interested in a specific activity, hobby, or belief. You use this to describe someone who spends a lot of time and energy on one thing.
n. a person who is deeply committed to a particular activity, belief, or person. Often used to describe a follower of a specific religion or a passionate enthusiast of a hobby.
He is a devoted devotee of classical music.
As a devoted devotee of the sport, she attends every local match and follows the international league closely.
The philosopher was a devoted devotee of the ancient texts, spending decades in quiet study to understand the nuances of the original language.
From devote + -ee. The narrowed meaning in sense 3 arises from the sound similarity with amputee.