interj. Not really so! (A tag phrase added to the end of a statement, changing it from affirmative to negative. There is usually a pause before Not!, which is said on a level pitch somewhat higher than the sentence that comes before.) : Of course I'm going to pay $100 a ticket to see a rock concert. Not!
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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