Possible means As adjective 1.Capable of happening or existing "a breakthrough may be possible next year"; "anything is possible"; "warned of possible consequences" 2.Existing in possibility possible uses of nuclear power" Noun 1.Something that can be done "politics is the art of the possible" While probable Adjective 1.Likely but not certain to be or become true or real "he foresaw a probable loss" 2.Apparently destined "the probable consequences of going ahead with the scheme" cowboy...