B1noun2K

Flag

UK /["/flæɡ/"]/US /["/flæɡ/"]/

Definition

a piece of cloth with a special coloured design on it that may be the symbol of a particular country or organization, may be used to give a signal or may have a particular meaning. A flag can be attached to a pole (= a long thin straight piece of wood or metal) or held in the hand.

In simple words: A piece of cloth with a design that represents a country or group.

Examples

  • The national flag is usually displayed on public holidays.
  • He waved the flag in celebration after the team's victory.
  • The sign had a red flag, indicating that swimming was not safe today.
  • You should flag any problems you notice during the project.
  • In soccer, a flag is raised to signal an offside violation.

Usage notes

Used to represent countries, organizations, or signal something. In neutral contexts, it’s appropriate for both written and spoken language. Avoid in informal contexts unless discussing sports or celebrations.

Grammar pattern

standalone noun

Memory hint

Think of a 'flag' waving high in the sky — it stands out like a landmark.

Collocations

  • national
  • battle
  • burning
  • fly
  • hang
  • hang out
  • hang
  • flap
  • flutter
  • pole
  • under a/​the flag
  • flag of
  • flag of convenience
  • flag of surrender

Synonyms

  • banner
  • ensign
  • standard
  • pennant
  • sacrament

Antonyms

  • conceal
  • hide

Common mistakes

  • Confused with 'flap' — they sound similar but have different meanings.
  • Using 'flag' as a verb incorrectly in formal writing without clarity.
  • Mixing up 'flag' with 'banner'; a flag is often more national than a banner.