adjective
Synonyms: unutterable , incommunicable, indefinable, indescribable, ineffable, inenarrable, inexpressible, undescribable, unexpressible, untellable
Related Word: loathsome, offensive, repulsive, revolting; abominable, detestable, hateful, odious; distasteful, obnoxious, repellent, repugnant; atrocious, disgusting, outrageous