Incapable of being spoken or uttered; unutterable; ineffable; inexpressible. (adjective)
Examples of word unspeakable
This is the Tennessee Valley Unitarian Universalist Church where religious leaders say the shooting was devastating, but they also say it brought what they call unspeakable amounts of love afterwards.
Being able to speak the unspeakable is very powerful.
After local prejudice and the family's own emotional frailty result in unspeakable tragedy, the gravedigger's daughter, Rebecca, begins her astonishing pilgrimage into America, an odyssey of erotic risk and imaginative daring, ingenious self-invention, and, in the end, a bittersweetbut very "American" triumph.