Contingency

"...non voco hic contingens quodcumque non necessarium, vel non sempiternum, sed cujus oppositum posset fieri quando illud fit. Ideo dixi: aliquod contingenter causatum, et non aliquod est contingens"

"...by 'contingent' I do not mean something that is not necessary or which was not always in existence, but something whose opposite could have occurred at the time that this actually did. That is why I do not say that something is contingent, but that something is caused contingently."

John Duns Scotus, Philosophical Writings, trans. Allan Wolter. Hackett, 1987, pp.54-55. [Opus oxoniense, I, dist. II, q. i.]