plaguey (adj.) Look up plaguey at Dictionary.com
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."