Sleepless
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 17:47的版本 （建立内容为“Category:etymology == wiktionary == [https://en.wiktionary.org/wiki/sleepless ref] From [https://en.wikipedia.org/wiki/Middle_English Middle English] slepele…”的新页面）
wiktionary
From Middle English slepeles, from Old English slǣplēas; equivalent to sleep + -less.
etymonline
sleepless (adj.)
early 15c., from sleep (n.) + -less. Old English had slæpleas but the modern word seems to be a re-formation. Similar formation in German schlaflos, Dutch slapeloos. Related: Sleeplessly; sleeplessness.
