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A guy that you thought was a mistake but it turns out he was the perfect guy all along.

It turns out he is so caring and really makes you happy
"Damn I thought he was a mistake but it turns out he is an istake! I'm so happy!"
by Dawg1994 November 24, 2016
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noun: Similar to a "mistake", an "istake" is an error to be made, ironically, whilst lecturing one about using correct grammar.
John, there are many grammatical istakes in your essay.
by aconyne March 04, 2009
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