unmentionable
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1un·men·tion·able

adjective \-ˈmen(t)-sh(ə-)nə-bəl\

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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