adj.
Pronunciation: ( ˌ )im- ' prä-b ə -b ə l, - ' präb-b ə l
Function: adjective
Etymology: Middle French or Latin; Middle French, from Latin improbabilis, from in- + probabilis probable
Date: 1598
: unlikely to be true or to occur also : unlikely but real or true
– im · prob · a · bil · i · ty \ - ˌ prä-b ə - ' bi-l ə -t ē \ noun
– im · prob · a · bly \ - ' prä-b ə -bl ē , - ' präb-bl ē \ adverb