adulterous
🇺🇸
/əˈdʌltərəs/
🇬🇧
/əˈdʌltərəs/
When someone is married but has a romantic or sexual relationship with someone who is not their spouse.
The scandal was about the politician's adulterous affair with a young intern.
這起醜聞是關於這位政治家的不忠行為,他與一位年輕實習生有染。