improbability

/ɪmˌprɑbəˈbɪləti/
noun
  1. The quality or state of being unlikely to happen or be true.
    • Given the improbability of his story, no one believed him.
    • Scientists discussed the improbability of life existing on that planet.
    • The improbability of winning the lottery didn't stop him from buying a ticket.
  2. Something that is unlikely to happen or be true.
    • The plot of the movie was full of improbabilities that made it hard to enjoy.
    • The novel is filled with delightful improbabilities that make it fun to read.
    • He listed several improbabilities in her explanation of the accident.