plaguefulyoudaoicibaDictYouDict[plagueful 词源字典]
"Conveying or threatening plague or disease; pestilent. Also in weakened use: annoying, troublesome", Late 16th cent.; earliest use found in Richard Carew (1555–1620), antiquary and poet. From plague + -ful.[plagueful etymology, plagueful origin, 英语词源]