自じ主しゅ練れん習しゅう

noun

voluntary practice; self-directed training

Practice or training done on one's own initiative, outside of formal sessions. Common in sports, music, and study contexts.

• 試し合あい前まえには自じ主しゅ練れん習しゅうを欠かかさない。

  I never miss voluntary practice before a match.

• 彼かれは毎まい朝あさ、自じ主しゅ練れん習しゅうでピアノを弾ひいている。

  He plays the piano every morning as self-directed practice.