狎なれる

ichidan verb, intransitive verb

get too familiar with; become overly close to

Implies an undesirable level of familiarity, often with a nuance of disrespect or loss of proper distance. Typically used in negative contexts.

• 彼かれは上じょう司しになれすぎて、ため口ぐちをきくようになった。

  He got too familiar with his boss and started speaking casually.

• あまり客きゃくになれると、礼れい儀ぎを忘わすれがちだ。

  If you get too familiar with customers, you tend to forget your manners.