noun, plural im·mu·ni·ties.

Origin of immunity

1350–1400; Middle English immunite < Latin immūnitās. See immune, -ity
Related formshy·per·im·mu·ni·ty, nounnon·im·mu·ni·ty, noun, plural non·im·mu·ni·ties.self-im·mu·ni·ty, noun, plural self·-im·mu·ni·ties.
Can be confusedimmunity impunity

Synonyms for immunity

4. See exemption. 5. franchise, license, liberty, prerogative.

Antonyms for immunity Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for immunity

Contemporary Examples of immunity

Historical Examples of immunity

  • One must, it seems, be young to enjoy this nineteenth-century immunity.

    Roden's Corner

    Henry Seton Merriman

  • After the Austrian war, an act of “immunity” was passed, in his behalf.

    Blood and Iron

    John Hubert Greusel

  • A billion dollars and immunity to cut off the outer dome of force.


    William Fitzgerald Jenkins

  • Is it not a feature of our age that none can claim privilege nor immunity?

    Gerald Fitzgerald

    Charles James Lever

  • How many a coward stab would be given in the shadow of that immunity!

    The Fortunes Of Glencore

    Charles James Lever

British Dictionary definitions for immunity


noun plural -ties

the ability of an organism to resist disease, either through the activities of specialized blood cells or antibodies produced by them in response to natural exposure or inoculation (active immunity) or by the injection of antiserum or the transfer of antibodies from a mother to her baby via the placenta or breast milk (passive immunity)See also acquired immunity, natural immunity
freedom from obligation or duty, esp exemption from tax, duty, legal liability, etc
any special privilege granting immunity
the exemption of ecclesiastical persons or property from various civil obligations or liabilities
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for immunity

late 14c., "exempt from service or obligation," from Old French immunité and directly from Latin immunitatem (nominative immunitas) "exemption from performing public service or charge," from immunis "exempt, free," from assimilated form of in- "not, opposite of" (see in- (1)) + munis "performing services" (cf. municipal), from PIE *moi-n-es-, suffixed form of root *mei- "to change" (see mutable). Medical sense "protection from disease" is 1879, from French or German.

Online Etymology Dictionary, © 2010 Douglas Harper

immunity in Medicine




The quality or condition of being immune.
Inherited, acquired, or induced resistance to infection by a specific pathogen.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

immunity in Science



The protection of the body from a disease caused by an infectious agent, such as a bacterium or virus. Immunity may be natural (that is, inherited) or acquired. See also acquired immunity.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

immunity in Culture


The ability of the body to resist or fight off infection and disease.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.