- immunity (n.)
- late 14c., "exemption from service or obligation," from Old French immunité "privilege; immunity from attack, inviolability" (14c.) and directly from Latin immunitatem (nominative immunitas) "exemption from performing public service or charge, privilege," from immunis "exempt, free," (see immune (adj.)). Medical sense of "protection from disease" is from 1879, from French or German.
