likely to occur or prove true: He foresaw a probable business loss. He is the probable writer of the article.
2.
having more evidence for than against, or evidence that inclines the mind to belief but leaves some room for doubt.
3.
affording ground for belief.
Origin: 1350–1400;Middle English < Latinprobābilis likely, literally, capable of standing a test, equivalent to probā(re) to test (see probe) + -bilis-ble
late 14c., from O.Fr. probable (14c.), from L. probabilis "provable," from probare "to try, to test" (see prove). Probable cause as a legal term is attested from 1670s.