(n.) Mutual or reciprocal relation; correlation.

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