What's the difference between merciless and unmerciful?

Merciless


Definition:

  • (a.) Destitute of mercy; cruel; unsparing; -- said of animate beings, and also, figuratively, of things; as, a merciless tyrant; merciless waves.

Example Sentences:

  • (1) Sri Lanka mounted a merciless final assault on the Tamil Tiger insurgency in 2009 .
  • (2) And up there, looming over it all is Zynga, social gaming's Ming the Merciless.
  • (3) He attacked, battened down the hatches on his serve and was merciless in the tie-break, levelling the match with a well-placed volley.
  • (4) Pyongyang reacted angrily when The Interview’s plot first became public and promised a “resolute and merciless” response if it went ahead.
  • (5) Where we already have the electoral numbers, our political vengeance has been merciless against the GOP; witness California after its electoral dalliance with anti-immigrant policies or Mitt Romney’s disastrous 2012 campaign .
  • (6) Gerrard had been mercilessly taunted again by Chelsea’s supporters and he had played as if determined to turn the volume down.
  • (7) But, despite such incidents, many will see the latest episode as some sort of karmic revenge for Letterman's often merciless take on the moral lapses of others.
  • (8) The Stoke supporters mercilessly booed the Welshman’s every touch, presumably for his reluctance to accept Ryan Shawcross’ apology for breaking his leg at the Britannia Stadium six years ago, and there was also some unsavoury and shameful chanting by a section of the home fans, who sang: “Aaron Ramsey, he walks with a limp”.
  • (9) Celeb bombed, and the critics were merciless, so I had wondered if that was why Enfield withdrew from our screens.
  • (10) It was the fasting month of Ramadan and as mercilessly hot as a desert city in high summer could be.
  • (11) Like some of those R-rated comedies that go down very well in the States, they don’t work here and don’t get released.” The Interview stars Rogen and James Franco as two journalists charged with carrying out the killing of Kim Jong-un, a storyline which prompted North Korean officials to complain to the United Nations in July and prompted state media warnings of “merciless retaliation”.
  • (12) With international lenders at the EU and IMF demanding that Athens step up its austerity drive - or risk losing the funding that is keeping its debt-stricken economy afloat -- President Carolos Papoulias told the visiting delegation: "Up until now, we've been receiving a merciless lashing.
  • (13) I’m afraid you’ve lost my trust.” HSBC chiefs face Margaret Hodge at her most merciless Read more She went on: “I really do think that you should consider your position and you should think about resigning and if not, I think the government should sack you.” Fairhead has been a non-executive director of HSBC since 2004, and was made the chair of the audit and risk committee – which bore responsibility for governance and compliance across the global bank – in May 2007.
  • (14) Always a contrived fiction, this sequence juxtaposes a poignant fantasy of a fully fit presenter with the merciless world of hard news.
  • (15) Remember those embarrassing bills for wisteria clearance at the young Conservative leader’s home amid the expenses debacle of 2009, and how these were lopped away by a merciless assault on the more shameless claims of various knights of the shire?
  • (16) Not even the cameras from the media that were capturing the unfolding scene were enough to deter the circus owner from pulling a gun and mercilessly beating us.
  • (17) Sheng Keyi , meanwhile, turns a mercilessly ironic eye on modern Chinese life, particularly the difficulties faced by women in a hypersexualised culture and the insecure economic life of migrant workers.
  • (18) The brief flurry of liberal street protest in 2011 and 2012 was ruthlessly snuffed out by the Kremlin, and many have suggested that, far from a liberal revolution, the most likely revolt in Russia is the “senseless and merciless” Russian uprising of which Alexander Pushkin wrote.
  • (19) In the 13th century the Cathars put up a strong defence of their beliefs and territory against the merciless persecution meted out by the Albigensian crusade.
  • (20) It’s happening to Christians now right across the Middle East and Africa, and the dangers of not speaking up have been made clear since the Paris attacks, when innocent people were gunned down mercilessly while shopping for food for the Shabbat [Jewish Sabbath].

Unmerciful


Definition:

  • (a.) Not merciful; indisposed to mercy or grace; cruel; inhuman; merciless; unkind.

Example Sentences:

  • (1) Wasikowska is fantastic as Robyn, her unmerciful eyes and contained silence emanating a determination, a commitment to her independence, and a derision for the life she's left behind.
  • (2) We did, after all, invade Libya with the Americans and hounded Gaddafi unmercifully until he was killed by his own people.
  • (3) From this unlikely base, Kirchner built a power structure that made him the undisputed leader of Argentina during an era marked by what seemed to be his three main obsessions: the trial of human rights violators; the redistribution of income; and a protracted war with Argentina's main media companies, which angered the Kirchners by reporting unmercifully on corruption during their presidencies.

Words possibly related to "unmerciful"