A11K

Thirty

UK /["/ˈθɜːti/"]/US /["/ˈθɜːrti/"]/

Definition

30

In simple words: The number 30.

Examples

  • She turned thirty last week.
  • I have thirty apples in the basket.
  • The project is due in thirty days.

Usage notes

Used to describe the quantity of something, often in counting age, years, or items. It can sound formal when discussing age but is neutral in everyday counting.

Grammar pattern

number + standalone

Memory hint

Think of 'thirty' like 'thirty sheep jumping over a fence'.

Collocations

  • thirty years old
  • thirty minutes
  • thirty twenty

Synonyms

  • thirty
  • 30
  • three times ten

Antonyms

  • zero
  • none

Common mistakes

  • Confused with 'thirteen' due to similar sounds.
  • Omitting the 'th' sound at the beginning.
  • Incorrectly spelling it as 'thirtye'.