unspeakable

From Middle English unspekable, equivalent to un- +‎ speakable.

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unspeakable (comparative more unspeakable, superlative most unspeakable)

1. Incapable of being spoken or uttered

   Synonyms: unutterable, ineffable, inexpressible

   • 1855-1882, Walt Whitman, Leaves of Grass, book xv,

     The endless pride and outstretching of man, unspeakable joys and sorrows.

2. Unfit or not permitted to be spoken or described.
   • 1916, James Joyce, A Portrait Of The Artist As A Young Man, ch. 3,

     The miser will remember his hoard of gold, the robber his ill-gotten wealth, the angry and revengeful and merciless murderers their deeds of blood and violence in which they revelled, the impure and adulterous the unspeakable and filthy pleasures in which they delighted.

3. Extremely bad or objectionable.

   an unspeakable fool

   an unspeakable play

   • 1926, H.P. Lovecraft, The Outsider,

     Yet to my horror I saw in its eaten-away and bone-revealing outlines a leering, abhorrent travesty on the human shape; and in its mouldy, disintegrating apparel an unspeakable quality that chilled me even more.

   • 2016 October 16, John Oliver, “Third Parties”, in Last Week Tonight with John Oliver, season 3, episode 26, HBO:

     Anyone who goes into a voting booth on November the 8th and comes out saying, “I feel a hundred percent great about what I just did in there!,” is either lying to themselves, or did something unspeakable in that booth! And that means, as uncomfortable as this is, everyone has to own the floors of whoever you vote for, whether they are a lying handsy narcissistic sociopath, a hawkish Wall Street-friendly embodiment of everything that some people can’t stand about politics, an ill-tempered mountain molester with a radical dangerous tax plan that even he can’t defend, or a conspiracy-pandering political neophyte with no clear understanding of how government operates and who once recorded this folk rap about the virtues of bicycling.

• See also Thesaurus:indescribable

• unspeakably
• unspeakableness

• unspeakable in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• “unspeakable” in Dictionary.com Unabridged, Dictionary.com, LLC, 1995–present.
• “unspeakable” in Microsoft's Encarta World English Dictionary, North American Edition (2007)
• "unspeakable" in the Wordsmyth Dictionary-Thesaurus (Wordsmyth, 2002)
• "unspeakable" in Cambridge Advanced Learner's Dictionary (Cambridge University Press, 2007)
• “unspeakable” in the Compact Oxford English Dictionary (Oxford University Press, 2007)
• "unspeakable" at Rhymezone (Datamuse, 2006).
• Oxford English Dictionary, second edition (1989)

un- +‎ speak +‎ -able

unspeakable (comparative mair unspeakable, superlative maist unspeakable)

1. unspeakable