A father figure to a child that is not married to the mother.

A father figure that stepped-up to the plate.
This is my mom and step-up dad, they take care of me.
by BoxedCheri February 16, 2017
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A Man Who's Made The Choice To Raise , Love and Protect A Child Who's Not Related By Bloodlines But By Marriage
" Hey Debb, Isn't Rene Your Mom's Boyfriend ? "

"No He's More Like My Stepped Up Dad"
by Debbs2hippie4you June 19, 2022
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