unspeakable

kammottava, sanoinkuvaamaton

käsittämätön, sanomaton Incapable of being speak spoken or uttered; unutterable; ineffable; inexpressible.
1855-1882, w:Walt Whitman|Walt Whitman, s:Leaves of Grass|Leaves of Grass, book xv,

The endless pride and outstretching of man, unspeakable joys and sorrows.

The miser will remember his hoard of gold, the robber his ill-gotten wealth, the angry and revengeful and merciless murderers their deeds of blood and violence in which they revelled, the impure and adulterous the unspeakable and filthy pleasures in which they delighted.

an unspeakable fool

an unspeakable play

Yet to my horror I saw in its eaten-away and bone-revealing outlines a leering, abhorrent travesty on the human shape; and in its mouldy, disintegrating apparel an unspeakable quality that chilled me even more.