probability(the state or fact of being probable; likelihood; an event, result etc. that is probable • There isn't much probability of that happening; Let's consider the probabilities); expectation; likelihood(мера, характеризующая возможность реализации события, сценария или последствия, их интенсивности или частоты; probability); chance; credibility; expectancy; fear; possibility; presumption; contingency; verisimilitude; plausibility; the odds(What are the odds of that happening? – Какова вероятность этого? • The odds for a colder and wetter/snowier winter than average are pretty good for us here in British Columbia. Wait and see... (Twitter) • The odds that the recently discovered asteroid will hit Earth on December 22, 2032 have now risen to 3.1 percent, NASA said on Tuesday, the highest probability for an impact by such a large space rock in modern forecasting. (yahoo.com/news) • The odds of encountering a Sasquatch in this park while walking your dog are one in five, according to cryptozoologist Ken Simpson.ART Vancouver); chances(What are the chances of that? – Какова вероятность этого?ART Vancouver); proximity; virtuality(ssn); prospect(cognachennessy); coloring; colouring; likeliness(= likelihood merriam-webster.com)
potential(zeev); odds(Though the odds are heavily against the debris [of the Russian craft, named Phobos-Grunt for the moon and the Russian word for ground] causing any harm, the spectacle of people around the world anticipating the crash is another embarrassment for Roscosmos, the Russian space agency, which has presided over a series of rocket and satellite failures this year.Alexander Demidov); eventuality(объективная возможность осуществления • However, he excluded that eventuality not because this was untrue but because “this may, perhaps, go too far in refining the rules regarding the intentions of the parties, and there is something to be said for keeping the rules in article 18 [which became article 19 of the Convention] as simple as possible”.Abysslooker)
probability(мера случайности появления конкретного события. Например, вероятность случайного выбора из популяции человека с конкретным качеством является просто отношением числа людей, обладающих этим качеством, к общему числу людей в популяции)
в математике - числовая характеристика степени возможности появления какого-либо случайного события при тех или иных определенных, могущих повторяться неограниченное число раз условиях (см. теория вероятностей). Большой Энциклопедический словарь
merriam-webster.com)