An amateur is someone who does something as a hobby and not as a job.
例句
Jerry is an amateur who dances because he feels like it...杰里是個業余跳舞愛好者，他跳舞是因為自己喜歡。Taylor began his playing career as an amateur goalkeeper.泰勒的運動生涯是從一名業余守門員開始的。
ADJ
（體育運動或活動）業余愛好的
Amateur sports or activities are done by people as a hobby and not as a job.
例句
...the local amateur dramatics society...地方業余戲劇社團At college he studied English and did amateur boxing.大學時，他學習英語，同時還參加業余拳擊。