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A strong girl. One whom has the ability to overcome hardships. She might be unsure of an outcome, but everything always ends up just right. Comes from an Irish orgin, meaning "Fair."
Thing One: Fionna is one strong, fearless, little lady.
Thing Two: Yeah, she is. She keeps embracing life. The name serves her right.
by Mister Yes May 31, 2010
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Very pretty girl who everyone loves. Not affiliated with shrek as there is another n in the middle so it’s spelt with two ns so shut up nadia and stop reading the same horrible definition
by Fionnameannadia June 02, 2018
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A creature with ogre-like characteristics and displays long, ratty, fire engine red hair. This creature is unable to fit in small showers and wears a size 22 shoe. Unlike regular human beings, this creature is incapable of making their own decisions, therefore follows several people around like a lost puppy. Since this creature cannot make their own decisions, they often display seperation anxiety and may ask people several questions. This creature also has a tendency to be attracted to the same sex and excrete large amounts of sweat.
"OooOOhhh look at you hot momma" - Fionna

"Fionna, I feel uncomfortable when you look at me that way"- Normal human being
by Kiley Liverston March 10, 2011
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