If you describe something that someone has said or done as unprintable, you mean that it is so rude or shocking that you do not want to say exactly what it was.
Her reply was unprintable.
...some quite unprintable stories.
unprintable in British English
(ʌnˈprɪntəbəl)
adjective
unsuitable for printing for reasons of obscenity, libel, bad taste, etc
Derived forms
unprintableness (unˈprintableness)
noun
unprintably (unˈprintably)
adverb
unprintable in American English
(ʌnˈprɪntəbəl)
adjective
not printable; not fit to be printed, as because of obscenity
Examples of 'unprintable' in a sentence
unprintable
Lyle walked into the room just as Michael began to hurl unprintable abuse at me.
Howatch, Susan ABSOLUTE TRUTHS (2001)
He prefaced the word `rubbish" with a few choice but unprintable adjectives.
Maclean, Alistair SAN ANDREAS (2001)
"Stand and fight," he shouted, adding an unprintable epithet.