probability

1 the quality or state of being likely to occur the plot of the movie thriller was exciting and surprising but woefully lacking in probability Synonyms liability, likelihood Related Words credibility, plausibility, plausibleness; feasibility, feasibleness, possibility, potentiality, reasonability, reasonableness, viability Near Antonyms doubtfulness, dubiousness; impracticability, impracticality; implausibility, incredibility, incredibleness Antonyms improbability, unlikelihood, unlikeliness

2 a measure of how often an event will occur instead of another the probability of flipping a coin and getting heads 50 times in a row is not good Synonyms chance, odds, percentage Related Words outlook, prospect; contingency, possibility, potential, potentiality; conditional probability