a. [UN-1 7.] Unmerciful.
1382. Wyclif, Jer. I. 42. Cruel thei ben and vnmerciable.
c. 1412. Hoccleve, De Reg. Princ., 3330. Where as our werkes moste ben avowed, The vnmerciable schal be disallowed.
1450. Rolls of Parlt., V. 212/1. Arraied in fourme of werre, with unmerciable forboden wepons.
1509. Barclay, Shyp of Folys, 150. Alas mad Fole and man vnmerciable.