I / infĭdēlĭtas
noun

infĭdēlĭtas

gen. ātis · gender feminine · decl. 3rd
unfaithfulness; faithlessness; infidelity
unfaithfulness, faithlessness, infidelity: amicitiarum, Cic. Tusc. 5, 22: infidelitatis suspicionem sustinere, * Caes. B. C. 2, 33. — In plur.: quantae infidelitates in amicitiis, Cic. Mil. 26, 69.