Definition of plaguily in English:

plaguily

adverb

  • In a plaguey manner; (informal) perniciously, annoyingly; exceedingly, extremely.

Origin

Late 16th century; earliest use found in Philip Sidney (1554–1586), author and courtier. From plaguey + -ly.

Pronunciation

plaguily

/ˈpleɪɡɪli/