Synonyms for Probable:

adj.

all (adjective)
likely.
assumptive (adjective)
presumptive.
likely to happen (adjective)
possible, presumable, feasible, presumed, plausible.
possible (adjective)
contingent.
probable (adjective)
likely, liable, plausible, possible, presumable, apt, prone, chancy.

n.

survivor, success story, top dog, high-flier, leader, hotshot, boy wonder, performer, superwoman. good, sure, guaranteed, probably, contingent, certain, bound, expected, possibly. belief, assumptive, prospective. likely (noun)
ming, feasible.
probable (noun)
plausible, likely, presumptive, presumed, equiprobable, verisimilar.

Other synonyms:

expected, assumptive, probably. prospective, guaranteed. possibly. certain. bound. sure. good. likely
feasible.