gadfly

/ˈɡædˌflaɪ/
noun
  1. A person who annoys or criticizes others, especially by asking difficult questions or challenging authority, often to provoke change.
    • The professor was a gadfly in the department, constantly challenging old ideas.
    • In meetings, she acted as a gadfly, pushing the team to think more carefully.
    • The journalist was known as a political gadfly, always questioning the mayor's decisions.
  2. A fly that bites livestock, such as a horsefly or botfly.
    • Farmers use special sprays to protect their animals from gadflies.
    • The horses were bothered by a swarm of gadflies in the pasture.
    • A gadfly bite can be very painful for cattle.
What does "gadfly" mean? | whatsthatwordmean | whatsthatwordmean