late 14c., "state, fact, or condition of being possible," from Old French possibilité (13c.) and directly from Latin possibilitatem (nominative possibilitas) "possibility," from possibilis (see possible (adj.)). Meaning "a possible thing or substance; that which may take place or come into being" is from c. 1400. Related: Possibilities.
there is a possibility that his sense of smell has been impaired
bankruptcy is always a possibility
possess
possessed
possession
possessive
posset
possibility
possible
possibly
POSSLQ
possum
post-