Mo
Mo is another way of saying no, just cuter and better.
"Mo!" said Sally the five-year-old "I won't cwean my woom!"

"Mo way! You are way cuwter than my ex!" said John to Tasha in his cutesy girlfriend voice.
by smahteepants July 20, 2009

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Mo
Homo (Gay-Someone that likes the same sex)
Or somebody that just isn't with the program.
That man is mo.
by Casino516 February 19, 2009

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Mo
A boy that you care about.
that boy is such a Mo
by carly9587634890758903 January 02, 2008

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mo
Mo is the name for someone's sexual side. Often times shy girls try to hide their sexual side, but Mo is the sexual beast inside them that they try and repress.
How's mo doing right now?
So that night, Mo just lifted up her legs, and things took off from there?
by mo. May 25, 2006

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Mo
adj.
-Meaning very, largly,or alot.
"Dude that was Mo cool"
by K-nott July 02, 2005

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mo
a gang stone they say allzwell mo run under da 5 point star hate gd'z they call dem bricks
whut up mo
by lil mo December 10, 2003

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Mo
When used in north eastern New Jersey/New York "Mo" generally stands for "Moron".
"My dad is such a mo. He got arrested for assaulting an officer again."
by LK865 November 18, 2011

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