To “give no quarter” means to show no mercy or pity and to offer no concessions to an opponent, whether in a literal or figurative fight. In modern everyday English, it usually means dealing with someone or something in an extremely harsh, uncompromising way—taking a “no kindness, no backing down” approach.

Core meaning

  • In simple terms, “give no quarter” = show no mercy, no leniency, no special favors.
  • It describes an attitude of total toughness or ruthlessness toward an opponent, rival, or problem.

Original wartime sense

  • Historically, “quarter” referred to sparing the lives of defeated enemies—granting them safety instead of killing them.
  • To “give no quarter” on the battlefield meant take no prisoners : do not spare even those who surrender, which is now considered a serious violation of the laws of war.

Modern everyday usage

Today the phrase is usually figurative, not literal:

  • In business or sports: a team or company “gives no quarter” when it competes aggressively and refuses to ease up on its opponents.
  • In criticism or debate: a reviewer, editor, or commentator “gives no quarter” when they are extremely harsh and uncompromising in their judgments.

Example sentences

  • “The prosecutor gave no quarter during the cross‑examination, pressing every weakness in the testimony.”
  • “In the championship game, they gave no quarter, attacking from start to finish.”

TL;DR: “Give no quarter” means to be completely ruthless and unforgiving—originally “take no prisoners” in war, now used for anyone who refuses to show mercy or back off.

Information gathered from public forums or data available on the internet and portrayed here.