(adv) without pity; in a merciless manner, Syn. unmercifully, pitilessly, remorselessly, Example:he was mercilessly trounced by his opponent in the House
a. Destitute of mercy; cruel; unsparing; -- said of animate beings, and also, figuratively, of things; as, a merciless tyrant; merciless waves. [ 1913 Webster ]
The foe is merciless, and will not pity. Shak. [ 1913 Webster ]