Top definition
sister...by cHat...not by blood : rEcognized on A high level of friendship...Tight relationship
Lush and Angel are the best sidders around.

You are my favorite sidder!
by justbaddest June 20, 2006
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2
Another form of saying sister, but you only use this word if your close with your sisters
Hey sidder I’ve missed you
by September 14, 2020
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