熟じゅく達たつ

noun, noun or participle which takes 'suru', intransitive verb

mastery; proficiency; expertise

Refers to having acquired deep skill or knowledge through long practice or study. Often used with する to mean 'become proficient' or 'master'.

• 彼かれはピアノに熟じゅく達たつしている。

  He has mastered the piano.

• 長なが年ねんの練れん習しゅうで、彼かの女じょは料りょう理りに熟じゅく達たつした。

  Through years of practice, she became proficient in cooking.