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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.
Fionna by Mister Yes May 31, 2010
no...
fionna no...
fionna by whatishit June 10, 2021
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
Fionna by Kiley Liverston March 26, 2011
hi i’m Fionna
Fionna : Hi my name Is
Fionna by svfttaehyung November 23, 2021

fionna and cake 

two characters in a show called, "Adventure Time". in the normal cartoon, its Finn and Jake. in the gender-swapped version, its Fionna and Cake.
"Fionna and Cake sure like adventuring!"

Fionna Ninja 

A fionna ninja is AWESOME!!!! It is only given to you. The person that has a H in the begging of his or her name is a fionna ninja.

There is also a monkey ninja, THE BEST THINGS IN THE WORLD !!!!!! They are the best climbers and very sneaky😁
Random dude: Helena is a fionna ninja!!!

Another dude: yea!!!
Fionna Ninja by Fionna ninja May 7, 2013
More from Urban Dictionary

piddlefart

verb. To waste time doing nothing.
Instead of doing my homework, I decided to piddlefart around for two hours.
piddlefart by Rene April 25, 2005
Word of the Day on October 9, 2026
anyone who succeeds in disgracing/over indulging themselves in the throws of clubland
28 hours and 4 clubs later, gurning for england but still refusing to go home - a total wrongun!!
wrongun by bevvers March 21, 2007
Word of the Day on October 8, 2026
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