the number equivalent to the product of two and ten; one more than nineteen and one less than twenty-one, a group or unit of twenty individuals or things

the twenties, in one's twenties, twenty-twenty vision

Formal and Informal Expressions of twenty

In different contexts, you can replace 'twenty' with suitable alternatives. In a more informal setting, 'two-oh' is apt.

twenty: Explore its Definition & Usage

twenty Definition

1the number equivalent to the product of two and ten; one more than nineteen and one less than twenty-one
2a group or unit of twenty individuals or things

Using twenty: Examples

Take a moment to familiarize yourself with how "twenty" can be used in various situations through the following examples!

Example
I have twenty dollars in my pocket.
Example
There are twenty students in the classroom.
Example
The book is divided into twenty chapters.

twenty Synonyms and Antonyms

Synonyms for twenty

score
2 tens

Phrases with twenty

the twenties
the decade from 1920 to 1929, or from 1820 to 1829, or from 1720 to 1729, etc.
Example
The fashion of the twenties was characterized by flapper dresses and bobbed haircuts.
in one's twenties
the period of time between the ages of 20 and 29
Example
In her twenties, she traveled the world and lived in different countries.
twenty-twenty vision
the ability to see clearly at a distance of 20 feet
Example
He has perfect vision and twenty-twenty eyesight.

Origins of twenty

from Old English 'twēntig'

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Summary: twenty in Brief

'Twenty' [ˈtwɛnti] is the number 20, or a group of 20 individuals or things. It is used in various contexts, such as age ('in one's twenties'), vision ('twenty-twenty vision'), and decades ('the twenties').