Adjective unspeakable has 3 senses
- 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)
- atrocious, abominable, awful, dreadful, painful, terrible, unspeakable - exceptionally bad or displeasing; "atrocious taste"; "abominable workmanship"; "an awful voice"; "dreadful manners"; "a painful performance"; "terrible handwriting"; "an unspeakable odor came sweeping into the room"
Antonym: good (indirect, via bad)
- ineffable, unnameable, unspeakable, unutterable - too sacred to be uttered; "the ineffable name of the Deity"
Antonym: profane (indirect, via sacred)
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