Definition of pesky in English:

pesky

adjective

North American
informal
  • Causing trouble; annoying.

    ‘a pesky younger brother’
    • ‘In Glasgow or on the west Coast, you can barely walk down the road without bumping into a pesky little trattoria.’
    • ‘Jack needs to get rid of these pesky aphids and he needs the money to buy insecticide.’
    • ‘It turns out that mosquitoes are a pesky problem on his island in the South Pacific.’
    • ‘Trim as necessary and adhere to the top of the wood making sure to get out any pesky air bubbles.’
    • ‘Any pesky remnants of feelings she used to have for him would just have to be dealt with later.’
    damned, damn, damnable, wretched, accursed, rotten, horrible
    View synonyms

Origin

Late 18th century: perhaps related to pest.

Pronunciation

pesky

/ˈpɛski/