agoniousyoudaoicibaDictYouDict[agonious 词源字典]
"(A) Full of agony, agonizing. (b) Involving struggle; relating to the agony of death", Early 16th cent.; earliest use found in Robert Fabyan (d. 1513), chronicler. From agony + -ous, originally after Middle French agonieux agonizing.[agonious etymology, agonious origin, 英语词源]