adj. 25B6; adjective
unspeakable delights : INDESCRIBABLE, beyond description, inexpressible, unutterable, indefinable, unimaginable, inconceivable, marvellous, wonderful.
an unspeakable crime : DREADFUL, awful, appalling, horrific, horrifying, horrendous, abominable, frightful, fearful, shocking, ghastly, gruesome, monstrous, heinous, egregious, deplorable, despicable, execrable, vile.