内ない緒しょ話ばなし

noun

secret talk; confidential conversation

A private conversation not meant for others to hear; often used among friends or family.

• 妹いもうとと内ない緒しょ話ばなしをしていたら、母ははが急きゅうに入はいってきた。

  While I was having a secret talk with my little sister, my mother suddenly came in.

• 授じゅ業ぎょう中ちゅうに内ない緒しょ話ばなしをするのはやめなさい。

  Stop having secret conversations during class.