Forty Definition
fôrtē
forties
noun
forties
The cardinal number between thirty-nine and forty-one; 40; XL.
Webster's New World
A decade or the numbers from 40 to 49.
They stopped smoking in their forties. At night the temperature fell into the forties.
American Heritage
The decade from 40 to 49 in a century.
American Heritage
Synonyms:
idiom
the forties
- the numbers or years, as of a century, from forty through forty-nine
Webster's New World
Idioms, Phrasal Verbs Related to Forty
- the forties
Origin of Forty
-
Middle English from Old English fēowertig kwetwer- in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
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