習しゅう熟じゅく

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

proficiency; mastery; becoming skilled

Refers to the state of having become proficient through practice or study, or the process of attaining proficiency. Often used in formal or written contexts.

• 彼かれは英えい語ごに習しゅう熟じゅくしている。

  He is proficient in English.

• 新あたらしいシステムに習しゅう熟じゅくするまで時じ間かんがかかった。

  It took time to become proficient with the new system.