forties.
The fifth decade of a century: the 1840s, 1940s, 2040s, etc.
Meaning & usage
The fifth decade of a century: the 1840s, 1940s, 2040s, etc.
My ma was born in the forties and my pa was born in the seventies.
The decade of one's life from age 40 through age 49.
They're both in their forties.
The range between 40 and 49.
What to wear when the weather is in the forties really depends on whether you're talking Fahrenheit or Celsius.
From or evoking the 41st through 50th years of a century (chiefly the 1940s).
Two forties aircraft sat forgotten in the hangar until they were rediscovered by two trespassing teens.
plural of forty
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.