Definition of pesty in US English:

pesty

adjective

US
informal
  • Noxious, harmful; troublesome, annoying; = "pesky".

Origin

Mid 19th century; earliest use found in Edgar Allan Poe (1809–1849), fiction writer, poet, and critic. From pest + -y. Compare earlier pesky and discussion at that entry.

Pronunciation

pesty

/ˈpɛsti/