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either–or

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noun ei·ther–or \ˌē-thər-ˈȯr also ˌī-\

Definition of either–or

  1. :  an unavoidable choice or exclusive division between only two alternatives

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First Known Use of either–or

1922

2

either–or

adjective ei·ther–or

Definition of either–or

  1. :  of or marked by either-or :  black-and-white

First Known Use of either–or

1926

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