Dictionary

1unmentionable

adjective un·men·tion·able \-ˈmen(t)-sh(ə-)nə-bəl\

: too offensive, shocking, or embarrassing to talk about or mention

Full Definition of UNMENTIONABLE

:  not fit or allowed to be mentioned or discussed :  unspeakable <an unmentionable topic>

Examples of UNMENTIONABLE

  1. There are certain topics that are considered to be unmentionable.

First Known Use of UNMENTIONABLE

1837

2unmentionable

noun

Definition of UNMENTIONABLE

:  one that is not to be mentioned or discussed: as
a plural :  3pant 1
b plural :  underwear

First Known Use of UNMENTIONABLE

1823

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