I am writing an article about “things that nobody talks about.” I feel sure that there should be a single word which can replace the phrase things that nobody talks about? It’s rather clumsy as it stands, in my opinion.
Perhaps not exactly what you're looking for, but 'elephant in the room' is an idiom that you can use when talking about a single instance of something that is an obvious, unavoidable truth that people still insist on not talking about.
The phrase basically stems from the idea that having an elephant in your living room is a large and obvious problem - but it's easier not to talk about or confront it because it's ultimately a problem that can't be solved without a great degree of difficulty.
I like verboten. Although it really means forbidden, it's usually used in the context you describe.
They are everyday things. Mirriam-Websters lists average, common, commonplace as synonyms. http://www.merriam-webster.com/dictionary/everyday
taboo |təˈbo͞o, ta-| noun a social or religious custom prohibiting or forbidding discussion of a particular practice or forbidding association with a particular person, place, or thing. adjective prohibited or restricted by social custom: verb place under such prohibition:
this comes from the OS X built in dictionary.
Things nobody talks about are called taboo. They are taboo to talk about or taboos.
Googles etymology has the following to say:
If you look for synonyms to taboo: http://thesaurus.com/browse/taboo
You get the following list with acceptable alternatives on how to call things that are not to be talked about:
beyond the pale
out of bounds
I don’t think you’re going to find a single word to describe things that are not reported on because they are ordinary, but “unsensational” or “non-sensationalistic” could convey the meaning and the judgement you’re getting at.
They are adjectives, which may not have been what you wanted, and uncommon, but their meaning is easy to guess.
un•men•tion•a•ble (ʌnˈmɛn ʃə nə bəl)
2. something that is not to be mentioned.
Note: but avoid the plural:
A little farther up Fifth Avenue, Beaufort appeared on his doorstep, darkly projected against a blaze of light, descended to his private brougham, and rolled away to a mysterious and probably unmentionable destination. (Edith Wharton, The Age of Innocence)
There may be no single word that will serve the entire purpose of the OP, but perhaps 'arcana' covers the most territory.
Also: Reminds me of Paul Graham’s essay, “What you can’t say”, at http://paulgraham.com/say.html.
It depends on why people don't talk about those things. It might be that they are really unimportant, and then you might say "forgotten issues". Or maybe people are affraid to talk about them, and in this case you might say "forbidden topics". Other adjectives may suit your objective: secret, neglected, censored, etc.