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Ninety

/ˈnaɪnti/

A number after eighty-nine and before ninety-one, commonly used to express quantity.

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We should be there in about ninety minutes.The temperature was in the nineties.Perhaps the machine was at eighty – ninety.

Derived from the Old English ‘nigontig’ which combines nigon for nine and ‘-tig’ for a group of ten, establishing the group of tens plus nine.

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