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.

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).

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 …

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

Feb 11, 2026 · Adjective forties (not comparable) From or evoking the 41st through 50th years of a century (chiefly the 1940s).

Nov 13, 2025 · Forties or Fourties – Which is Correct? The correct term is forties, which refers to the decade from 1940 to 1949. The spelling fourties is incorrect and does not exist in standard English. …

The term 'forties' generally refers to the numbers ranging from 40 to 49, either identified in years, degrees, or any other measuring units. It can also refer to a person’s age when they are between 40 …

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

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

The decade of one's life from age 40 through age 49. They're both in their forties.