SI PARCERE EI SINE SUO PERICULO NON POTEST

si parcere ei sine suo periculo non potest (sIpahr-s[schwa]r-ee ee-IsI-nee s[y]oo-oh p[schwa]-rik-y[schwa]-loh non poh-test). [Latin] Roman law. If he could not spare him except at his own peril. • This phrase defined the circumstances in which a defendant could plead self-defense.