Male infertility is such a taboosubject, but it shouldn't be.
The Sun (2012)
It's getting worse and that's why we are tackling what has up until recently been a taboosubject.
Times, Sunday Times (2014)
Stories like this just have to be aired otherwise domestic abuse becomes a taboosubject.
The Sun (2016)
Definition of 'subject'
subject
(sʌbdʒɪkt) (səbdʒekt)Explore 'subject' in the dictionary
countable noun
The subject of something such as a conversation, letter, or book is the thing that is being discussed or written about.
Definition of 'taboo'
taboo
(tæbuː)Explore 'taboo' in the dictionary
countable noun
If there is a taboo on a subject or activity, it is a social custom to avoid doing that activity or talking about that subject, because people find them embarrassing or offensive.