thirty
noun
a cardinal number, 10 times 3.
thirties
-
pluralof thirty.plural
The grammatical form denoting more than one person, place, thing, or idea.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
She first picked up a brush as a married mother of three in her thirties, and only after her father’s death.
From Los Angeles Times ● Sep. 21, 2026
Though still considered one of the world's best-known feminist activists, Steinem came to advocacy rather late in life - in her thirties.
From BBC ● Sep. 3, 2026
Another witness, in his thirties, corroborated reports of an explosion.
From Barron's ● Aug. 30, 2026
Confirmed traffic through the strait fell to just 10 ships Monday, according to ship-tracking firm Kpler, compared with levels in the thirties and forties early last week.
From The Wall Street Journal ● Jul. 14, 2026
Hockett, also in his early thirties, had spent nine years selling and then trading derivatives for Deutsche Bank in Tokyo.
From "The Big Short" by Michael Lewis
