not speakable; that may not be spoken.

exceeding the power of speech; unutterable; inexpressible; indescribable.

inexpressibly bad or objectionable.

adjective

good , nice

adjective

abominable , alarming , appalling , atrocious , awful , beastly , beyond words , calamitous , detestable , dire , disgusting , dreadful , evil , execrable , fearful , frightening , frightful , heinous , horrible , horrid , incommunicable , inconceivable , indefinable , indescribable , ineffable , inexpressible , inhuman , loathsome , monstrous , nameless , obnoxious , odious , offensive , outrageous , overwhelming , preternatural , repellent , repugnant , repulsive , revolting , shocking , unbelievable , unimaginable , unutterable , undescribable , unmentionable , hateful , sickening , wicked