the past; something that happened in the past that you would like to be forgotten.
Why can't you let bygones be bygones?
by DaDiva January 5, 2005
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An expression meant to pre-emptively defer an argument based on an opposing viewpoint. It signals to the other person that you already understand their position and accept that you disagree with each other. It is a reference to the phrase "let bygones be bygones," and was popularized by the TV show "Ally McBeal."
Sorry, I think socialized medicine is a good idea. Bygones!
by Esprix July 16, 2009
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A bygon is a hater or a backstabber.
She is a fucking bygon.
by Tyler is bae January 31, 2015
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forget about unpleasant things that have happened in the past
There is a feeling here that we should let bygones be bygones and move on to more important things.
by sanane January 20, 2012
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Someone that plays both sides of an argument but refuses to pick either.

A friend that keeps secrets from you when they see your boyfriend or girlfriend being doing you wrong because "its not their place."
I thought you were my friend until you failed to tell me jessica was sucking d in the ruby tuesday parking lot, now i can see your just a bygone.
by Batsquirrel May 15, 2019
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A middle aged angry white woman with blonde hair. Very popular with men when she was younger , so very used to getting her way. Now, she is constantly angry for not getting attention and takes it out on the world , namely retail and restaurant workers . Aka “BGB “ .
That bygone Barbie just asked to see a manager because we didn’t accept her expired coupon .
by Jaxguy August 30, 2019
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