Learn how to say Improbable correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word improbable:
not likely to be true or to happen:
this account of events was seen by the jury as most improbable
unexpected and apparently inauthentic:
the characters have improbable names
late 16th century: from French, or from Latin improbabilis ‘hard to prove’, from in- ‘not’ + probabilis (see probable)