不ふ倫りん相あい手て

noun

illicit lover; affair partner; mistress

Refers to the person one is having an extramarital or otherwise socially disapproved romantic/sexual relationship with. Often used in contexts of infidelity.

• 彼かれは不ふ倫りん相あい手てと密みっ会かいしていた。

  He was secretly meeting his affair partner.

• 不ふ倫りん相あい手てに慰い謝しゃ料りょうを請せい求きゅうする。

  Demand compensation from the illicit lover.