thirties

1. 1
   nounplural

   The years of someone's life between the ages of 30 and 39.

   Like the part of life that comes after your twenties and before your forties.

   She started running marathons in her thirties.

   By his thirties, he had already raised three kids.

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2. 2
   nounplural

   A ten-year period starting with a year ending in 30, usually 1930 to 1939.

   Jazz and swing music were hugely popular in the thirties.

   My grandmother was born in the thirties, just after the crash.

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3. 3
   nounplural

   Any number from 30 to 39, often used for temperatures or rates.

   The temperature dropped into the thirties overnight.

   Her test scores were down in the thirties this term.

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4. 4
   adjective

   Coming from or reminding people of the 1930s.

   She loves thirties music and old black-and-white movies.

   The hotel lobby had a thirties look, with art deco lamps.

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5. 5
   noun

   Plural of thirty. Use this form when you mean more than one thirty.

   The teacher wrote three thirties on the board and asked us to add them.

   The page was full of thirties and forties scribbled in pencil.

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