A / accĭdentĭa
noun

accĭdentĭa

gen. accĭdentiae · gender feminine · decl. 1st
that which happens; a casual event; a chance
that which happens, a casual event, a chance: esse illam naturae accidentiam, Plin. 32, 2, 9, § 19; Tert. de Anim. 11 al.