B1noun1K

Function

UK /["/ˈfʌŋkʃn/"]/US /["/ˈfʌŋkʃn/"]/

Definition

a special activity or purpose of a person or thing

In simple words: What something does or is used for.

Examples

  • The main function of the heart is to pump blood throughout the body.
  • To solve the equation, we need to find the function that represents the relationship between the variables.
  • This remote control has a special function that allows you to change the TV's settings quickly.
  • In mathematics, a function defines a relationship between a set of inputs and outputs.
  • She was invited to the annual charity function held at the local community center.

Usage notes

Use 'function' when discussing what something is supposed to do. It's appropriate in technical, academic, or everyday contexts, but avoid it in very casual conversations.

Grammar pattern

function + as/like + object

Memory hint

Think of a 'fun-tion' as a fun job or role a thing has.

Collocations

  • important
  • useful
  • valuable
  • have
  • carry out
  • fulfil/​fulfill
  • charity
  • official
  • social
  • hold
  • attend
  • go to
  • room

Synonyms

  • role
  • purpose
  • operation
  • task
  • activity

Antonyms

  • dysfunction
  • malfunction

Common mistakes

  • 'Function' is confused with 'functional' — they are different.
  • Using 'function' when 'purpose' is more appropriate.
  • Incorrectly pluralizing 'function' when referring to it in general terms.