improbability
nounUK /ɪmˌpɹɒb.əˈbɪl.ɪ.ti/ · US /ɪmˌpɹɑb.əˈbɪl.ə.ti/
Etymology From im- + probability.
1
The quality or state of being improbable; unlikelihood.
2
That which is improbable; an improbable event or result.
- "I really," returned the other with a sneer, "cannot agree about probabilities or improbabilities, but I know what the generality will think when they see a gentleman constantly with five very pretty girls, and I also know what they will say."1838 (date written), L[etitia] E[lizabeth] L[andon], chapter X, in Lady Anne Granard; or, Keeping up Appearances. […], volume I, London: Henry Colburn, […], published 1842, →OCLC, page 130: