unmentionable
🇺🇸
/ʌnˈmenʃənəbl/
🇬🇧
/ʌnˈmenʃənəbl/
so embarrassing or shocking that it's not talked about
The comedian made a joke about an unmentionable topic, causing some audience members to gasp.
喜剧演员开了一个关于不可提及话题的玩笑,导致一些观众倒吸一口凉气。