Antonyms of noun improbability

1 sense of improbability

Sense 1
improbability, improbableness -- (the quality of being improbable; "impossibility should never be confused with improbability"; "the improbability of such rare coincidences")
       Antonym of probability (Sense 2)
      => probability -- (the quality of being probable; a probable event or the most probable event; "for a while mutiny seemed a probability"; "going by past experience there was a high probability that the visitors were lost")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun improbability

1 sense of improbability

Sense 1
improbability, improbableness -- (the quality of being improbable; "impossibility should never be confused with improbability"; "the improbability of such rare coincidences")
       => uncertainty, uncertainness, precariousness -- (being unsettled or in doubt or dependent on chance; "the uncertainty of the outcome"; "the precariousness of his income")