enthusiast; fan; lover; devotee; aficionado
Refers to a person who deeply enjoys or is passionate about a particular hobby, art form, or activity. Often used as a suffix (e.g., 音楽愛好者 'music lover').
See also: 愛好家
彼はクラシック音楽の愛好者だ。
He is an enthusiast of classical music.
This event is unmissable for film lovers.
Compound of 愛好 (aikō, 'love, fondness') + 者 (sha, 'person'). The reading あいこうしゃ follows standard on'yomi.