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Noun: improbability  im`pró-bu'bi-li-tee
  1. The quality of being improbable
    "impossibility should never be confused with improbability"; "the improbability of such rare coincidences"
    - improbableness

Derived forms: improbabilities

See also: improbable

Type of: precariousness, uncertainness, uncertainty

Antonym: probability

Encyclopedia: Improbability