immune
Word family
- immunitynounB2
- immunizeverbB2
- immunizationnounB2
- immunodeficiencynounC1
- autoimmuneadjectiveC1
Synonym discussion
Sense: adjective/1
All four words describe being safe from harm, but they differ in scope and register. 'Immune' (B2) is the specific medical term for bodily defence against disease — it implies an internal biological mechanism ('She is immune to measles'). 'Resistant' (B2) is broader: it can describe biological defence ('resistant bacteria') or a person's refusal to be influenced ('resistant to change'). 'Protected' (B1) is the most general and passive — it focuses on an external force providing safety, not an internal ability ('The children were protected by the vaccine'). 'Invulnerable' (C1) is the strongest and most literary; it suggests total, permanent invincibility, which is rarely true in real medical or emotional contexts ('No one is invulnerable to heart disease'). Use 'immune' for biological facts, 'resistant' for partial or non-biological defence, 'protected' when an outside agent does the work, and 'invulnerable' only for dramatic or hypothetical statements.
Common collocations
Phrases
- be immune
- become immune
- remain immune
- make immune
- render immune
- considered immune
Etymology
The word 'immune' comes from the Latin adjective 'immunis', which means 'exempt from public service or taxation.' It was formed by combining the negative prefix 'in-' (not) with 'munus' (service, duty, gift). In ancient Rome, a citizen who was 'immunis' did not have to pay taxes or perform military service. The medical meaning — 'protected from disease' — developed in the late 1800s as scientists began to understand how the body resists infection. The emotional and metaphorical senses (not affected by criticism, exempt from consequences) expanded from the legal meaning during the 20th century.