noun, noun or participle which takes 'suru', intransitive verb
proficiency; mastery; becoming proficient
Refers to the state or process of becoming skilled through practice or experience. Often used in formal or written contexts. Cross-referenced with 習熟, which is more common.
See also: 習熟
業務に慣熟するまで時間がかかった。
It took time to become proficient in the work.
彼は英語に慣熟している。
He is proficient in English.