forty

play
noun for·ty \ˈfȯr-tē\

Definition of forty

plural

forties

  1. 1 :  a number equal to four times 10 — see number table

  2. 2 forties plural :  the numbers 40 to 49; specifically :  the years 40 to 49 in a lifetime or century

  3. 3 :  the third point scored by a side in a game of tennis

fortieth

play \ˈfȯr-tē-əth\ adjective or noun

forty

adjective

forty

pronoun, plural in construction

fortyish

play \ˈfȯr-tē-ish\ adjective

Examples of forty in a Sentence

  1. The temperature outside is in the high forties.

  2. She is in her forties.

Recent Examples of forty from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'forty'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of forty

Middle English fourty, adjective, from Old English fēowertig, from fēowertig group of 40, from fēower four + -tig group of 10; akin to Old English tīen ten


First Known Use: before 12th century

Other Number-Related Terms


FORTY Defined for English Language Learners

forty

play
noun

Definition of forty for English Language Learners

  • : the number 40

  • forties : the numbers ranging from 40 to 49

  • : a set of years ending in digits ranging from 40 to 49


FORTY Defined for Kids

1

forty

play
adjective for·ty \ˈfȯr-tē\

Definition of forty for Students

  1. :  being four times ten


2

forty

play
noun for·ty

Definition of forty for Students

  1. :  four times ten :  40



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