actus rei

Etymology
First attested in 1970; from the (“acts”, the nominative plural form of, “act”) +  (the masculine nominative plural form of , “guilty”).

Noun

 * 1) * 1970, Pacific Law Journal (published by the students of the University of the Pacific, McGeorge School of Law), volume 1, page 194
 * They are as it were, the actus rei of matrimonial guilt.
 * They are as it were, the actus rei of matrimonial guilt.