unbearable

adj

Etymology: From Middle English unberable, equivalent to un- + bearable.

1. So unpleasant or painful as to be unendurable.

   “The heat of the fire, the steam which arose from the dampening water, the hard slogging at the white-hot metal of the links, and the continual pulling of lengths of chain, were calculated to put a test on the strongest of men, and often on hot summer days they had to be sent home, for the work became unbearable.”