Merciless
来自Big Physics
Safin（讨论 | 贡献）2022年4月28日 (四) 00:30的版本 （建立内容为“Category:etymology == wiktionary == [https://en.wiktionary.org/wiki/merciless ref] From [https://en.wikipedia.org/wiki/Middle_English Middle English] mercile…”的新页面）
wiktionary
From Middle English merciles, mercyles, equivalent to mercy + -less.
etymonline
merciless (adj.)
late 14c., "unfeeling, pitiless, cruel," from mercy + -less. Sense of "relentless" is from early 15c.; of inanimate things, from 1580s. Related: Mercilessly; mercilessness.
