1.  immunity(n = noun.state) unsusceptibility - the state of not being susceptible; "unsusceptibility to rust"
is a kind of condition, status
has particulars: exemption, freedom

2.  immunity(n = noun.state) resistance - (medicine) the condition in which an organism can resist disease;
is a kind of condition, status
has particulars: immunogenicity, acquired immunity, innate immunity, natural immunity
Derived forms adjective immune₃, adjective immune₁

3.  immunity(n = noun.attribute) - the quality of being unaffected by something; "immunity to criticism"
is a kind of invulnerability
Derived form adjective immune₄

4.  immunity(n = noun.act) exemption, granting immunity - an act exempting someone; "he was granted immunity from prosecution"
is a kind of discharge, release, waiver
has particulars: fix, official immunity, sovereign immunity, testimonial immunity, use immunity
Derived form adjective immune₂

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.]

immunity, n. (pl. -ies)
1 Med. the ability of an organism to resist infection, by means of the presence of circulating antibodies and white blood cells.
2 freedom or exemption from an obligation, penalty, or unfavourable circumstance.

Etymology:
ME f. L immunitas (as IMMUNE): sense 1 f. F immunit{eacute}

N  freedom, liberty, independence, license, facility, scope, range, latitude, play, free play, full play, free scope, full scope, free stage and no favor, swing, full swing, elbowroom, margin, rope, wide berth, Liberty Hall, franchise, denization, free man, freed man, livery man, denizen, autonomy, self-government, liberalism, free trade, noninterference, Monroe Doctrine, immunity, exemption, emancipation, enfranchisement, affranchisement, free land, freehold, allodium, frankalmoigne, mortmain, bushwhacker, freelance, free thinker, free trader, independent, free, free as air, out of harness, independent, at large, loose, scot-free, left alone, left to oneself, in full swing, uncaught, unconstrained, unbuttoned, unconfined, unrestrained, unchecked, unprevented, unhindered, unobstructed, unbound, uncontrolled, untrammeled, unsubject, ungoverned, unenslaved, unenthralled, unchained, unshackled, unfettered, unreined, unbridled, uncurbed, unmuzzled, unrestricted, unlimited, unmitigated, unconditional, absolute, discretionary, unassailed, unforced, uncompelled, unbiassed, spontaneous, free and easy, at ease, at one's ease, degage, quite at home, wanton, rampant, irrepressible, unvanquished, exempt, freed, freeborn, autonomous, freehold, allodial, gratis, eleutherian, unclaimed, going a begging, freely, ad libitum, ubi libertas ibi patria, free white and twenty-one.

N  exemption, absence, exception, immunity, privilege, release, exempt from, devoid of, without, unpossessed of, unblest with, immune from, not having, unpossessed, untenanted, without an owner, unobtained, unacquired, exemption, freedom, irresponsibility, immunity, liberty, license, release, exoneration, excuse, dispensation, absolution, franchise, renunciation, discharge, exculpation, exempt, free, immune, at liberty, scot-free, released, unbound, unencumbered, irresponsible, unaccountable, not answerable, excusable, bonis nocet quisquis pepercerit malis, exemption, absence, exception, immunity, privilege, release, exempt from, devoid of, without, unpossessed of, unblest with, immune from, not having, unpossessed, untenanted, without an owner, unobtained, unacquired, exemption, freedom, irresponsibility, immunity, liberty, license, release, exoneration, excuse, dispensation, absolution, franchise, renunciation, discharge, exculpation, exempt, free, immune, at liberty, scot-free, released, unbound, unencumbered, irresponsible, unaccountable, not answerable, excusable, bonis nocet quisquis pepercerit malis.

N  acquittal, acquitment, clearance, exculpation, acquittance, clearance, exoneration, discharge, quietus, absolution, compurgation, reprieve, respite, pardon, impunity, diplomatic immunity, immunity, plea bargain, deal with the prosecutor, no cause for action, no damages, acquitted, uncondemned, unpunished, unchastised, not guilty, not proven, not liable, nemo bis punitur pro codem delicto.

N  due, dueness, right, privilege, prerogative, prescription, title, claim, pretension, demand, birthright, immunity, license, liberty, franchise, vested interest, vested right, sanction, authority, warranty, charter, warrant, constitution, tenure, bond, claimant, appellant, plaintiff, having a right to, entitled to, claiming, deserving, meriting, worthy of, privileged, allowed, sanctioned, warranted, authorized, ordained, prescribed, constitutional, chartered, enfranchised, prescriptive, presumptive, absolute, indefeasible, unalienable, inalienable, imprescriptible, inviolable, unimpeachable, unchallenged, sacrosanct, due to, merited, deserved, condign, richly deserved, allowable, lawful, licit, legitimate, legal, legalized, square, unexceptionable, right, equitable, due, en r gle, fit, fitting, correct, proper, meet, befitting, becoming, seemly, decorous, creditable, up to the mark, right as a trivet, just the thing, quite the thing, selon les r gles, duly, ex officio, de jure, by right, by divine right, jure divino, Dei gratia, in the name of, civis Romanus sum, +a chaque saint sa chandelle.

acquired immunity, active immunity, diplomatic immunity, granting immunity, innate immunity, natural immunity, official immunity, passive immunity, racial immunity, sovereign immunity, testimonial immunity, transactional immunity, use immunity