keener
🇺🇸
/ˈkiːnər/
🇬🇧
/ˈkiːnə(r)/
noun
R
a person who is very enthusiastic or eager about something
She was a keener on the idea of hiking than her friends.
她对远足的想法比她的朋友们更热衷。
translation
狂热爱好者