probability
Definitions
The extent to which an event is likely to occur, measured by the ratio of favorable cases to the whole number of cases possible.
The quality or state of being probable; likelihood.
Examples
The probability of rain increases significantly when the sky turns dark and cloudy.
Scientists calculated the probability of success for the new medical treatment before beginning the clinical trials.
Synonyms
likelihood chance possibility prospect odds plausibility expectancy
Antonyms
impossibility certainty unlikelihood improbability hopelessness