improbability

noun

1. the quality of being unlikely to happen or be true; lack of probability

   B2

   uncountable; often followed by 'of'

   • "The improbability of winning the lottery did not stop her from buying a ticket."B1
   • "The improbability of rain meant we left our umbrellas at home."B1
   • "The apparent improbability of the result does not, by itself, prove that the data are flawed."C1

2. an unlikely event, situation, or claim

   C1

   countable

   • "The story is full of improbabilities."B1
   • "Critics complained about the improbabilities in the plot."B2
   • "He dismissed the theory as a collection of wild improbabilities."C1