alasyoudaoicibaDictYouDict[alas 词源字典]
alas: [13] In origin alas was an exclamation of weariness rather than grief. Latin lassus ‘weary’ (related to let ‘allow’ and source of lassitude) passed into Old French as las which, with the addition of the exclamation a ‘ah’, became alas.
=> lassitude, let[alas etymology, alas origin, 英语词源]
alasyoudaoicibaDictYouDict
mid-13c., from Old French ha, las (later French hélas), from ha "ah" + las "unfortunate," originally "tired, weary," from Latin lassus "weary" (see late). At first an expression of weariness rather than woe.