unspeakable

adjectives

defying expression or description

"indefinable yearnings"; "indescribable beauty"; "ineffable ecstasy"; "inexpressible anguish"; "unspeakable happiness"; "unutterable contempt"; "a thing of untellable splendor"

indefinable, indescribable, ineffable, unspeakable, untellable, unutterable

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"

abominable, atrocious, awful, dreadful, painful, terrible, unspeakable

too sacred to be uttered

"the ineffable name of the Deity"

ineffable, unnameable, unspeakable, unutterable