Search Result for "immunity": 
Wordnet 3.0

NOUN (4)

1. the state of not being susceptible;
- Example: "unsusceptibility to rust"
[syn: unsusceptibility, immunity]

2. (medicine) the condition in which an organism can resist disease;
[syn: immunity, resistance]

3. the quality of being unaffected by something;
- Example: "immunity to criticism"

4. an act exempting someone;
- Example: "he was granted immunity from prosecution"
[syn: exemption, immunity, granting immunity]

The Collaborative International Dictionary of English v.0.48:

Immunity \Im*mu"ni*ty\, n.; pl. Immunities. [L. immunitas, fr. immunis free from a public service; pref. im- not + munis complaisant, obliging, cf. munus service, duty: cf. F. immunit['e]. See Common, and cf. Mean, a.] 1. Freedom or exemption from any charge, duty, obligation, office, tax, imposition, penalty, or service; a particular privilege; as, the immunities of the free cities of Germany; the immunities of the clergy. [1913 Webster] 2. Freedom; exemption; as, immunity from error. [1913 Webster] 3. The state of being insusceptible to disease, certain poisons, etc. [Webster 1913 Suppl.]
WordNet (r) 3.0 (2006):

immunity n 1: the state of not being susceptible; "unsusceptibility to rust" [syn: unsusceptibility, immunity] [ant: susceptibility, susceptibleness] 2: (medicine) the condition in which an organism can resist disease [syn: immunity, resistance] 3: the quality of being unaffected by something; "immunity to criticism" 4: an act exempting someone; "he was granted immunity from prosecution" [syn: exemption, immunity, granting immunity]
Moby Thesaurus II by Grady Ward, 1.0:

93 Moby Thesaurus words for "immunity": absolution, acquired immunity, active immunity, amnesty, antibody, antigen, artificial immunity, assurance, blank check, carte blanche, charter, clear sailing, congenital immunity, copyright, diplomatic immunity, discharge, dispensation, exception, exclusion, exculpation, excuse, exemption, exoneration, familial immunity, favor, franchise, freedom, grace, grant, harmlessness, immunity theory, immunization, immunization therapy, immunochemistry, immunology, immunotherapy, impunity, indemnity, indulgence, inherent immunity, inherited immunity, inoculation, insusceptibility, invulnerability, legislative immunity, liberty, license, natural immunity, nolle prosequi, non prosequitur, nonprosecution, nonspecific immunity, nonsusceptibility to disease, opsonic immunity, pardon, passive immunity, patch test, patent, permission, phagocytic immunity, privilege, protection, racial immunity, redemption, release, remission, remission of sin, reprieve, resistance, risklessness, safeguard, safeness, safety, scratch test, security, serotherapeutics, serotherapy, serum therapy, shrift, side-chain theory, sparing, special favor, specific immunity, stay, surety, toxin-antitoxin immunity, toxin-antitoxin immunization, tuberculin test, unsusceptibility, vaccination, vaccine therapy, vaccinotherapy, warrant
Bouvier's Law Dictionary, Revised 6th Ed (1856):

IMMUNITY. An exemption from serving in an office, or performing duties which the law generally requires other citizens to perform. Vide Dig. lib. 50, t. 6; 1 Chit. Cr. L. 821; 4 Har. & M'Hen. 341.