hyperbole

/haɪˈpɜːrbəli/
noun
  1. A way of speaking or writing that uses extreme exaggeration to make a point or create an effect, not meant to be taken literally.
    • The politician's speech was full of hyperbole, claiming the new law would solve every problem in the country.
    • In her review, the critic used hyperbole to describe the movie as 'the greatest film ever made.'
    • Saying 'I'm so hungry I could eat a horse' is a classic example of hyperbole.