Guys, Best way for a woman to turn a man down?

I'd like to know what guys consider the best way tor a woman they approach to turn them down. I always try to be kind, but am not always sure of the best way to do it and it feels so awkward..

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You guys came up with so many good ones! Like so Many women, single or married, I frequently grapple with this, but I particularly wanted to provide some Ideas to my 19 yo niece. I think she will appreciate you efforts as much as I do!
Guys, Best way for a woman to turn a man down?
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