A taboo subject or activity is one that people avoid because many people find it embarrassing or offensive.
双语例句
例：
Cancer is a taboo subject and people are frightened or embarrassed to talk openly about it.
癌症是个禁忌的话题，人们对公开谈论癌症感到害怕或尴尬。
NOUN. 名词
taboos
1.?[C 可数名词] 禁忌
A taboo against a subject or activity is a social custom to avoid doing that activity or talking about that subject, because people find them embarrassing or offensive.
双语例句
例：
The topic of addiction remains something of a taboo in our family.