possibility

noun

1. a future prospect or potential

   noun.cognition

   Source: WordNet 3.0

2. capability of existing or happening or being true

   noun.state

   Examples

   There is a possibility that his sense of smell has been impaired.

   Synonyms possibleness

   Antonyms impossibility impossibleness

   Source: WordNet 3.0

3. a tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena

   noun.cognition

   Synonyms hypothesis theory

   Source: WordNet 3.0

4. a possible alternative

   noun.cognition

   Examples

   Bankruptcy is always a possibility.

   Synonyms opening possible action

   Source: WordNet 3.0

5. The quality or state of being possible; the power of happening, being, or existing.

   noun

   Source: webster1913