unmentionable

[ uhn-men-shuh-nuh-buh l ]
/ ʌnˈmɛn ʃə nə bəl /

adjective

not mentionable; inappropriate, unfit, or improper for mention, as in polite conversation; unspeakable.

noun

something that is not to be mentioned: That subject was classed among the unmentionables.
unmentionables,
  1. undergarments.
  2. (formerly) trousers or breeches.

Origin of unmentionable

First recorded in 1820–30; un-1 + mentionable

OTHER WORDS FROM unmentionable

un·men·tion·a·ble·ness, noun

Example sentences from the Web for unmentionables

British Dictionary definitions for unmentionables (1 of 2)

unmentionables
/ (ʌnˈmɛnʃənəbəlz) /

pl n

mainly jocular underwear

British Dictionary definitions for unmentionables (2 of 2)

unmentionable
/ (ʌnˈmɛnʃənəbəl) /

adjective

  1. unsuitable or forbidden as a topic of conversation
  2. (as noun)the unmentionable

Derived forms of unmentionable

unmentionableness, noun unmentionably, adverb