Definition of immune in US English:



  • 1Resistant to a particular infection or toxin owing to the presence of specific antibodies or sensitized white blood cells.

    ‘they were naturally immune to hepatitis B’
    • ‘People whose immune systems have fought the infection will then be immune to TB.’
    • ‘Once someone has had chickenpox, they are immune to further infection.’
    • ‘More people were also already immune to the disease.’
    • ‘Most women of childbearing age are immune to rubella because they either were vaccinated or had the illness during childhood.’
    • ‘No area in the United States is immune to head lice.’
    • ‘All of this is narrated by Michael, the only one of the quartet immune to the infection.’
    • ‘This is an inactive version of the infection and the body produces antibodies to fight it so that you are then immune to it.’
    • ‘And in case anybody at home thinks allergists are immune to getting allergies themselves, you yourself get shots.’
    • ‘Most adults are immune to mono after age 18 (their body fights the virus so they don't get sick).’
    • ‘A blood test will show whether you are already immune to the hepatitis A virus, due to previous infection.’
    • ‘As every flu season tells us, developed nations are far from immune to communicable disease.’
    • ‘When a human being becomes immune to an infection, the immunity is usually due to blood cells, lymphocytes, that produce antibodies.’
    • ‘In this way, vaccinations allow you to become immune to an infection without having the illness first.’
    • ‘Contracting the disease once does not render a person immune to future infections, which is why getting routine boosters is so important.’
    • ‘Those who were born before 1956 are considered to be immune to measles and mumps and don't require these vaccines.’
    • ‘If you are thinking about becoming pregnant, make sure that you are immune to rubella through a blood test or proof of immunization.’
    • ‘What's more, the genes he inherited from those fortunate forebears may have made him largely immune to HIV.’
    • ‘Even if you know you have had the rubella vaccination, your body may not have made enough antibodies to make you immune to the virus, so it is best to check.’
    • ‘Birds that exhibit no infection may be immune to parasites or susceptible but not yet exposed.’
    • ‘Travelers to these areas should be immune to polio.’
    1. 1.1 Protected or exempt, especially from an obligation or the effects of something.
      ‘they are immune from legal action’
      • ‘Historically, firms have been virtually immune from lawsuits based on their decisions relating to their own partners.’
      • ‘However, this obviously does not mean that free software advocates are immune from software bugs and configuration problems.’
      • ‘Commercial free speech is protected, but it is not immune from regulation.’
      • ‘And the day power becomes immune from criticism is the day democracy dies.’
      • ‘Although no facility can be considered immune to attack, some are less likely targets than others.’
      • ‘How could these guys operate for more than a decade immune from prosecution?’
      • ‘They are also rendered legally immune from any wrongful, illegal and criminal acts the corporation might commit in their search for profits.’
      • ‘Royalty are not immune from their effects, as we have seen all too clearly.’
      • ‘Nevertheless, if the worst happened, we would not be immune from the effects of such an attack.’
      • ‘The company claims it is immune from the suit because users legally copy music for personal use.’
      • ‘Fitzgerald believes the group should be relatively immune to economic slowdown.’
      • ‘The Attorney General and Crown attorneys are immune from civil suit except in the case of malicious prosecution.’
      • ‘Our tourism industry is not immune from the economic pressures which have moved much of the electronics industry to Eastern Europe and the Far East, and financial services to India.’
      • ‘When that was the case, were they regarded as being immune from liability for negligence?’
      • ‘No one in the world can consider themselves immune from its potentially disastrous effects.’
      • ‘Politics beckoned, not just because it offered an outlet for his rhetorical brilliance and restless ambition, but also because MPs were immune from prosecution.’
      • ‘But the party that sits to my right is not immune from criticism, either.’
      • ‘In the old days, such a manager would have been largely immune from prosecution.’
      • ‘In the past, the Vatican has been treated as a sovereign state immune from prosecution.’
      • ‘That it happens at all is nonetheless deeply troubling for a nation that has long thought itself immune from the kind of social malaise that it liked to characterise as a western problem.’
      resistant, not subject, not liable, unsusceptible, not vulnerable, not open, not exposed
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    2. 1.2predicative Not affected or influenced by something.
      ‘no one is immune to his immense charm’
      • ‘At the same time, the hype notwithstanding, large parts of the country remain immune to media influence.’
      • ‘Foreign policy coordination is mostly immune to specific goals or timetables.’
      • ‘This is unfortunate, since he has usually been immune to such literary affectations.’
      • ‘Being supposedly immortal did not make me immune to pain.’
      • ‘Ohhhhhh but I am not easily affected by any man - I am immune!’
      • ‘We could see their love and it rubbed off on us - or at least it rubbed off on those not so opposed to the man as to be immune to such influence.’
      • ‘Consumer electronics has so far appeared relatively immune to the economic downturn.’
      • ‘Is reform possible in a people so immune to reason?’
      • ‘Hidden behind ever-present sunglasses, he appeared immune to pressure.’
      • ‘So maybe I'm not completely immune to those seasonal influences either…’
      • ‘Graceful and outgoing to others, they seem almost immune to tension and anxiety.’
      • ‘Analyses and opinions were not immune to those influences.’
      • ‘His ambition fueled him onward, rendering him immune to pain or trivial distractions.’
      • ‘I guess there are only so many classics and back home you almost become immune to their charms.’
      • ‘The political class has become largely immune to the heartache of war.’
      • ‘Even though men are often centralised in these knowledge systems, it does not mean that they are immune to their influence.’
      unchanged, unaltered, uninfluenced
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    3. 1.3Biology attributive Relating to immunity.
      ‘the body's immune system’
      • ‘Vitamin C is necessary for collagen formation, proper immune function, and as a tissue antioxidant.’
      • ‘Several studies have been undertaken using this natural immune modulator.’
      • ‘Rejection is the term applied to the natural immune response to foreign tissue.’
      • ‘People with immune suppression or underlying lung disease are more susceptible to fungal infections.’
      • ‘Glutamine also nourishes muscle, gut and immune cells directly, reducing protein loss.’


Late Middle English (in the sense ‘free from (a liability’)): from Latin immunis ‘exempt from public service or charge’, from in- ‘not’ + munis ‘ready for service’. Senses relating to physiological resistance date from the late 19th century.