不倫 ふりん
furin

Noun
Suru Verb
na-Adjective
no-Adjective

1. adultery; impropriety; (an) affair; immorality

Intransitive
となり ひと わか おんな ひと不倫 ふりんしているらしいよ。
tonarino hitoga wakai onnano hitoto furin shite irurashiiyo.
Did you hear that our neighbor was fooling around with a younger woman?