unappeasable (adj.)

1560s, from un- (1) "not" + appeasable. Related: Unappeasably.

Desolate winds that cry over the wandering sea;

Desolate winds that hover in the flaming West;

Desolate winds that beat the doors of Heaven, and beat

The doors of Hell and blow there many a whimpering ghost;

O heart the winds have shaken, the unappeasable host

Is comelier than candles at Mother Mary's feet.

[W.B. Yeats, "The Unappeasable Host," 1899]