Assure
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 01:13的版本 （建立内容为“Category:etymology == google == [https://www.google.com.hk/search?q=assure+etymology&newwindow=1&hl=en ref] late Middle English: from Old French assurer, bas…”的新页面）
late Middle English: from Old French assurer, based on Latin ad- ‘to’ (expressing change) + securus (see secure).
wiktionary
From Old French asseurer (Modern French assurer), from Latin ad- + securus(“secure”). Cognate with Spanish asegurar. Doublet of assecure.
etymonline
assure (v.)
late 14c., "reassure, give confidence to; make secure or safe, protect; bind by a pledge, give a promise or pledge (to do something)," from Old French asseurer "to reassure, calm, protect, to render sure" (12c., Modern French assurer), from Vulgar Latin *assecurar, from assimilated form of Latin ad "to" (see ad-) + securus "safe, secure" (see secure (adj.)). Related: Assured; assuring.
