despair (v.)youdaoicibaDictYouDict[despair 词源字典]
early 14c., from stem of Old French desperer "be dismayed, lose hope, despair," from Latin desperare "to despair, to lose all hope," from de- "without" (see de-) + sperare "to hope," from spes "hope" (see sperate). Related: Despaired; despairing; despairingly.[despair etymology, despair origin, 英语词源]