plural thirties
1
: a number equal to three times 10 see Table of Numbers
2
thirties plural
: the numbers 30 to 39
specifically
: the years 30 to 39 in a lifetime or century
3
: a sign of completion : end
—usually written 30
wrote thirty on the last page of the story
4
: the second point scored by a side in a game of tennis
thirty
adjective
thirty
pronoun, plural in construction
Examples of thirty in a Sentence
The temperature outside is in the high thirties.
He is in his thirties.
Recent Examples on the Web
Both of them are in their late thirties and the matchmakers have a lot of confidence that this couple will last—and fans do too!
—
Lea Veloso, StyleCaster, 15 Oct. 2024
Sheehy is in his late thirties and new to politics.
—E. Tammy Kim, The New Yorker, 20 Sep. 2024
Finally, a man in his thirties, with head shaved, walks toward me.
—Joseph Bien-Kahn, Rolling Stone, 3 Nov. 2024
Judge and Cole are both in their thirties and have likely peaked as players.
—Tony Blengino, Forbes, 1 Nov. 2024
See all Example Sentences for thirty 
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Lea Veloso, StyleCaster, 15 Oct. 2024
Sheehy is in his late thirties and new to politics.
—E. Tammy Kim, The New Yorker, 20 Sep. 2024
Finally, a man in his thirties, with head shaved, walks toward me.
—Joseph Bien-Kahn, Rolling Stone, 3 Nov. 2024
Judge and Cole are both in their thirties and have likely peaked as players.
—Tony Blengino, Forbes, 1 Nov. 2024
See all Example Sentences for thirty
Dictionary Entries Near thirty
Cite this Entry
“Thirty.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thirty. Accessed 1 Dec. 2024.
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