no such animal
there is no such animal
That does not exist. Sometimes followed by "as" and the thing that one is claiming does not exist. There have been a lot of rumors about an impending round layoffs, but let me be clear: there is no such animal. Although there is strong bipartisan support for the bill, everyone knows that there is no such animal as a sure thing when it comes to action in Congress.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
no such animalused to express the idea that nothing of the type mentioned exists. informal
The phrase appears to have originated in the caption to a cartoon in Life magazine in 1907 , in which someone is looking at a camel.
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