unmentionable

[ uhn-men-shuh-nuh-buhl ]
See synonyms for unmentionable on Thesaurus.com
adjective
  1. not mentionable; inappropriate, unfit, or improper for mention, as in polite conversation; unspeakable.

noun
  1. something that is not to be mentioned: That subject was classed among the unmentionables.

  2. unmentionables,

Origin of unmentionable

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

Other words from unmentionable

  • un·men·tion·a·ble·ness, noun

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

British Dictionary definitions for unmentionable

unmentionable

/ (ʌnˈmɛnʃənəbəl) /


adjective
    • unsuitable or forbidden as a topic of conversation

    • (as noun): the unmentionable

Derived forms of unmentionable

  • unmentionableness, noun
  • unmentionably, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012