Definition of empest in English:

empest

(also impest)

verb

rare
  • with object To infect with plague, pestilence, etc.

Origin

Early 17th century; earliest use found in William Fowler (d. 1612), writer and courtier. From French empester to corrupt (a person) morally, to infect (a person) with a contagious disease, e.g. plague or pestilence from em- + peste.

Pronunciation

empest

/ɪmˈpɛst/ /ɛmˈpɛst/