Synonyms for Probability:

n.

approximation, countdown, decimal place, binomial, computational, deviation, calculation, algorithm, abacus, average. future, threat, sporting chance, odds, likely. attribute (noun)
chance.
likelihood (noun)
contingency, expectation, promise, practicability, conceivability, credibility, feasibility, odds, presumption, reasonableness, anticipation.
likelihood of something happening (noun)
expectation, promise, feasibility, anticipation, presumption, contingency, credibility, plausibility, liability, likeliness, chance, reasonableness, odds, possibility, practicability, conceivability.
possibility (noun)
contingency, practicability.
probability (noun)
possibility, aptness, plausibility, chance.
susceptibility (noun)
liability, susceptibility, vulnerability, likeliness, proneness, tendency, potentiality, exposed, apt, likelihood.

Other synonyms:

sporting chance. odds. threat. promise. future. plausibility
credibility.
potentiality
practicability.
practicability
feasibility.