The temperature will be in the forties (= between 40° and 49°) today. Our house was built in the forties (= between 1940 and 1949). They are both in their forties (= between 40 and 49 years old).

The meaning of FORTY is a number equal to four times 10. How to use forty in a sentence. The Spelling of Forty: Usage Guide.

a. A decade or the numbers from 40 to 49: They stopped smoking in their forties. At night the temperature fell into the forties. b. often Forties The decade from 40 to 49 in a century. [Middle …

Mar 24, 2024 · "Fourties" is a common misspelling. The correct term is "Forties," referring to numbers or a decade between 40 and 49.

forties in American English the numbers, years, degrees, or the like, from 40 through 49, as in referring to numbered streets, indicating the years of a lifetime or of a century, or degrees of temperature

Nov 7, 2025 · What to wear when the weather is in the forties really depends on whether you're talking fahrenheit or celsius.

Definitions of forties noun the time of life between 40 and 50 synonyms: mid-forties see more noun the decade from 1940 to 1949