Definitions of unspeakable
  1. adjective
    defying expression or description
    unspeakable happiness”
    synonyms: indefinable, indescribable, ineffable, untellable, unutterable
    inexpressible, unexpressible
    defying expression
  2. adjective
    exceptionally bad or displeasing
    “an unspeakable odor came sweeping into the room”
    synonyms: abominable, abysmal, atrocious, awful, dreadful, painful, terrible, vile
    having undesirable or negative qualities
  3. adjective
    too sacred to be uttered
    synonyms: ineffable, unnameable, unutterable
    concerned with religion or religious purposes
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