possibility
noun
a future prospect or potential
“this room has great possibilities”
capability of existing or happening or being true
“there is a possibility that his sense of smell has been impaired”
SynonymspossiblenessOppositesimpossibilitya tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena
“a scientific hypothesis that survives experimental testing becomes a scientific theory”
“he proposed a fresh theory of alkalis that later was accepted in chemical practices”
a possible alternative
“bankruptcy is always a possibility”
Source: WordNet 3.1, Princeton University