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English definition of “forty”

forty

 
 
/ˈfɔːti/
A2 the number 40Cardinal numbers, including nought and zero
the forties the years from 1940 to 1949
be in your forties to be aged between 40 and 49
fortieth 40th written as a wordOrdinal numbers
(Definition of forty from the Cambridge Learners Dictionary © Cambridge University Press)
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