A pest is an animal or an insect that causes problems for people, plants, or other animals. A pest can be big or small.

  • Mosquitoes are pests that bite people.

  • Some pests, such as worms, eat plants and crops that human beings grow for food. Farmers might try to kill pests with pesticide.* (But pesticides are bad for human beings, too!)
  • Flies are pests. If you don’t want them eating your food, you can kill them with a fly swatter.

Sometimes we use the word"pest" to describe human beings.

  • That little boy is being a pest.
  • That kid is such a pest.
  • Sandra thinks her little brother is a pest.
  • Stop being a pest.
  • If I’m being a pest, just let me know. I don’t want to bother you.

The word "pester" is a verb.

  • Stop pestering me.
  • Reporters pestered the politician with questions until he finally gave them some answers.
  • Manuel is always pestering the teacher about his grades.

*pesticide: a chemical used to kill pests.

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February 27, 2014