MERCILESS
merciless, unmerciful
(adjective) having or showing no mercy; “the merciless enemy”; “a merciless critic”; “gave him a merciless beating”
Source: WordNet® 3.1
Etymology
Adjective
merciless (comparative more merciless, superlative most merciless)
Showing no mercy; cruel and pitiless.
Synonyms
• unmerciful
• cruel
• pitiless
• ruthless
Anagrams
• crimeless
Source: Wiktionary
Mer"ci*less, a.
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition