Contingency :  (noun)
1: a possible event or occurrence or result [syn: eventuality, contingence]
2: the state of being contingent on something

accessory, accident, accidental, addendum, addition, adjunct, adventure, appendage, appurtenance, aptitude, aptness, auxiliary, bare possibility, blind bargain, borderline case, break, casualty, chance, chance hit, circumstance, collateral, coming to be, conceivability, conceivableness, condition, conjuncture, contingent, correlation, crisis, crossroads, dependence, double contingency, emergency, even chance, event, eventuality, eventuation, exigency, extra, fluke, fortuity, freak accident, gamble, good chance, good possibility, guess, hap, happening, happenstance, hazard, hope, incidence, incident, incidental, inessential, interrelation, juncture, liability, liableness, likelihood, likeliness, long odds, long shot, lucky shot, materialization, mere chance, nonessential, not-self, obligation, occasion, occurrence, off chance, open question, opportunity, other, outside chance, outside hope, pass, piece of guesswork, pinch, possibility, possibleness, potential, potentiality, probability, proneness, prospect, question, realization, relativity, remote possibility, secondary, sight-unseen transaction, small hope, strait, subsidiary, superaddition, supplement, the attainable, the feasible, the possible, thinkability, thinkableness, toss-up, touch and go, turning point, undecided issue, unessential, virtuality, wager, weakness, what is possible, what may be, what might be, zero hour,