noun
advanced amateur; high-level amateur
Wasei-eigo term often used in photography, music, or other skilled hobbies to describe a very proficient non-professional.
wasei-eigo (Japanese-coined English), from high amateur
彼はハイアマチュアの写真家として展覧会を開いた。
He held an exhibition as an advanced amateur photographer.
ハイアマチュアのピアニストがコンクールで入賞した。
A high-level amateur pianist won a prize at the competition.