Adjective ineffable has 2 senses
  1. indefinable, indescribable, ineffable, unspeakable, untellable, unutterable - defying expression or description; "indefinable yearnings"; "indescribable beauty"; "ineffable ecstasy"; "inexpressible anguish"; "unspeakable happiness"; "unutterable contempt"; "a thing of untellable splendor"
    Antonym: expressible (indirect, via inexpressible)
  2. ineffable, unnameable, unspeakable, unutterable - too sacred to be uttered; "the ineffable name of the Deity"
    Antonym: profane (indirect, via sacred)
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