- possibility - a future prospect or potential; "this room has great possibilities"
--1 is a kind of expectation, outlook, prospect
- possibility, possibleness - capability of existing or happening or being true; "there is a possibility that his sense of smell has been impaired"
--2 is a kind of being, beingness, existence
Antonyms: impossibility, impossibleness
--2 has particulars:conceivableness, conceivability; achievability, attainability, attainableness; potential, potentiality, potency; opportunity, chance - hypothesis, possibility, theory - a tentative theory about 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"
--3 is a kind of concept, conception, construct
--3 is a part of theory
--3 has particulars:model, theoretical account, framework; speculation, conjecture; assumption, supposition, supposal - possibility, possible action, opening - a possible alternative; "bankruptcy is always a possibility"
--4 is a kind of option, alternative, choice
--4 has particulars: possible - possibility, possibleness - capability of existing or happening or being true; "there is a possibility that his sense of smell has been impaired"