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Definition illness in British English

illness noun

noun
/ˈɪlnəs/

Other ways of saying illness

disease a serious illness that usually lasts a long time, often one that affects a particular part of the body: tropical diseasesShe has a rare lung disease.

infection an illness that is caused by bacteria and that does not usually last a long time: He was off work with a throat infection.

virus a very small germ that causes illness, or an illness caused by these things: The virus is highly contagious.She has a virus.

condition an illness or medical problem that affects someone for a long time: a serious heart condition

disorder (formal) a situation in which a particular part of someone’s body does not operate normally, often causing illness for a long period of time: a stomach/heart/liver disorder

ailment a minor illness that may be painful or uncomfortable: He was complaining about his various ailments.

bug (informal) an illness caused by a virus or bacteria that is not serious and that does not usually last a long time: a stomach bug

1

the state of feeling ill or of having a disease

Example

He missed five days of school because of illness.

Example

patients who are recovering from major surgery or serious illness

Synonyms and related words
1.1

a particular disease, or a period of being ill

Example

She had had no serious illnesses, and had never been in hospital.

Example

My aunt died that spring after a long illness.

Synonyms and related words
1.2

a serious mental problem

Example

More than three million people suffer from severe mental illness.

Synonyms and related words
Definition illness in British English