if not


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if not

if that is not [the case]; if that is not so. If not cleaned, the clock will stop running. He should be here at noon. If not, we will eat without him.
See also: if, not
References in periodicals archive ?
This first-of-its-kind solution can save the coal burning industry hundreds of millions if not billions of dollars, in failing emission control costs.
If not called, the coupon will step up by 100 basis points.
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