A2noun1K

Flu

UK /["/fluː/"]/US /["/fluː/"]/

Definition

a serious disease caused by a virus, that causes a high temperature, severe pains and weakness

In simple words: A sickness caused by a virus, making you feel tired and have fever.

Examples

  • The whole family has the flu.
  • She's got flu.
  • She was off work for four days because of a bout with the flu.
  • a **flu outbreak/epidemic/pandemic**
  • a **flu vaccine/vaccination**
  • a **flu jab**
  • a **flu shot**
  • He is suffering from **flu-like symptoms**.

Usage notes

Use 'flu' when talking about the illness caused by the influenza virus. It's appropriate in both formal and informal contexts, but avoid using it in serious medical discussions where more specific terms are needed.

Grammar pattern

standalone noun

Memory hint

Think of 'flying flu' because it spreads quickly from person to person, like a bird in flight.

Collocations

  • mild
  • bad
  • gastric
  • bout
  • case
  • dose
  • be in bed with
  • have
  • suffer from
  • bug
  • virus
  • epidemic
  • a bout with the flu

Synonyms

  • influenza
  • virus
  • bug
  • sickness

Antonyms

  • health
  • wellness

Common mistakes

  • Confusing flu with a common cold.
  • Using 'the flu' when talking about sickness in general.
  • Not recognizing that flu can be serious for some people.