慣なれ親したしむ

godan verb (-mu), intransitive verb

become familiar with and grow fond of; get to know and love

Describes a gradual process of becoming accustomed to something and developing affection for it. Often used for places, routines, or things one has used for a long time.

• 長なが年ねん使つかった道どう具ぐには慣なれ親したしんでいる。

  I've grown fond of the tools I've used for many years.

• 彼かれは新あたらしい職しょく場ばに慣なれ親したしむまで時じ間かんがかかった。

  It took him a while to get used to and feel comfortable in his new workplace.