thirty

word

/ˈθɝˌdi/
THUR-dee
/θˈɜːti/
THUR-tee

Definition

The number 30, which comes after twenty-nine and before thirty-one. It can be used for counting, age, dates, time, and quantities.

Usage & Nuances

Used as a number and sometimes as a noun: 'thirty people', 'the thirty on the page'. For ages, English often says 'thirty years old' or 'in her thirties' for an approximate age range. In time expressions, 'six-thirty' means 6:30.

Example Sentences

There are thirty students in my class.

basic

My father is thirty years old.

basic

The bus comes at thirty past eight.

basic

I just turned thirty, and honestly, I feel great.

natural

We only need thirty more dollars to buy it.

natural

She’s probably in her thirties, but I’m not sure.

natural