It is normally used in a sentence to describe a very normal-wierd type of behavior, thought, or action.
Eg: This is a very fiona-ish thing to do.
Fiona is the most amazing girl in the world. She is unique, beautiful, understanding, kind, and loving. A beam of sunshine who will always make your day better. Fiona is a very smart, creative girl who can do anything if she puts her mind to it. The best person ever. She is one of a kind. Someone who loves and cares for everyone. Out of anyone anyone would be lucky to be with her or even have her as a friend.
Fancy/Fiona is amazing
A beautiful, precious and loving soul. A soul that is the first of many things. A soul that is wise beyond her years. A soul that is super strong willed and determined. A soul that is fearless and strong. A soul that brings joy to those who love her. An angel in human form. A soul who will define herself to everyone else. A soul that is so loved.
Camauri Fiona is a treasure to her parents Camau and Britney.
Someone who cheats on a lot of men and gets beat by her ex then leaves the city
Guy 1: Damn I really wanna be a Fiona ghallagher
Guy 2: I don’t like Fiona ghallaghers
Guy 1: fuck you
Guy 2: eat me