a. [ Pref. un- not + mercy. ] Unmerciful; merciless. [ Obs. ] Drayton. [ 1913 Webster ]
a. Not merciful; indisposed to mercy or grace; cruel; inhuman; merciless; unkind. --
a. [ Pref. un- (intensive) + merciless. ] Utterly merciless. [ Obs. ] Joye. [ 1913 Webster ]