Mer"ci*less, a.
Destitute of mercy; cruel; unsparing; -- said of animate beings, and also, figuratively, of things; as, a merciless tyrant; merciless waves.
The foe is merciless, and will not pity.
Shak.
Syn. -- Cruel; unmerciful; remorseless; ruthless; pitiless; barbarous; savage.
-- Mer"ci*less*ly, adv. -- Mer"ci*less*ness, n.
© Webster 1913.