unspeakable

Definitions of unspeakable
1

adj defying expression or description

unspeakable happiness”
Synonyms:
indefinable, indescribable, ineffable, untellable, unutterable
inexpressible, unexpressible
defying expression

adj exceptionally bad or displeasing

“an unspeakable odor came sweeping into the room”
Synonyms:
abominable, atrocious, awful, dreadful, painful, terrible
bad
having undesirable or negative qualities

adj too sacred to be uttered

Synonyms:
ineffable, unnameable, unutterable
sacred
concerned with religion or religious purposes

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