plaguey (adj.)youdaoicibaDictYouDict[plaguey 词源字典]
1570s, "pertaining to a plague," from plague (n.) + -y (2). Figurative meaning "vexatious, troublesome" is from 1610s. As an adverb (properly it would be plaguily) it is attested from 1580s, often with deliberate attempt at humor. Johnson also has woundy "excessive."[plaguey etymology, plaguey origin, 英语词源]