The Collaborative International Dictionary of English v.0.48:

Eventuality \E*ven`tu*al"i*ty\, n.; pl. Eventualities. [Cf. F.
   ['e]ventualit['e].]
   1. The coming as a consequence; contingency; also, an event
      which comes as a consequence.
      [1913 Webster]

   2. (Phren.) Disposition to take cognizance of events.
      [1913 Webster]

WordNet (r) 3.0 (2006):

eventuality
    n 1: a possible event or occurrence or result [syn:
         eventuality, contingency, contingence]

Moby Thesaurus II by Grady Ward, 1.0:

119 Moby Thesaurus words for "eventuality":
   accident, aftereffect, aftermath, aftertime, afteryears, aptitude,
   aptness, bare possibility, by-and-by, by-product, case, chance,
   circumstance, coming to be, conceivability, conceivableness,
   condition, conjuncture, consequence, consequent, contingency,
   contingent, corollary, course ahead, crystal ball, derivation,
   derivative, determinism, development, distant future, distillate,
   effect, even chance, event, eventuation, expectation, finality,
   foresight, forward look, fruit, future, future tense, futureness,
   futurism, futurity, good chance, good possibility, happening,
   harvest, hereafter, hope, immediate future, immediate prospect,
   imminence, incidence, incident, issue, juncture, legacy, liability,
   liableness, likelihood, likeliness, logical outcome,
   materialization, near future, obligation, occasion, occurrence,
   off chance, offing, offshoot, offspring, outcome, outgrowth,
   outlook, outside chance, outside hope, possibility, possibleness,
   posteriority, potential, potentiality, precipitate, prediction,
   probability, product, project, proneness, prophecy, prospect,
   realization, remote possibility, result, resultant, sequel,
   sequela, sequence, sequent, small hope, the attainable,
   the feasible, the future, the morrow, the possible,
   the sweet by-and-by, thinkability, thinkableness, time ahead,
   time just ahead, time to come, tomorrow, ultimateness, upshot,
   virtuality, weakness, what is possible, what may be,
   what might be