私し通つう

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

illicit love affair; adultery; fornication

Formal or legal term for an extramarital sexual relationship. Often used in historical or legal contexts; in everyday speech, 不倫 (ふりん) is more common.

• 彼かれは既き婚こん者しゃとの私し通つうが発はっ覚かくして、社しゃ会かい的てきな信しん用ようを失うしなった。

  His illicit affair with a married person was exposed, and he lost social credibility.