unmentionable

== English == === Etymology === From un- +‎ mentionable. === Adjective === unmentionable (comparative more unmentionable, superlative most unmentionable) Too embarrassing or shocking to be discussed. Antonym: mentionable ==== Derived terms ==== unmentionables unmentionably ==== Translations ==== === Noun === unmentionable (plural unmentionables) Something not to be discussed in polite society. === Further reading === “unmentionable”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present. “unmentionable”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present. “unmentionable” in Longman Dictionary of Contemporary English, Longman.