Fionn

An Irish name descending from Gaelic families. Nowadays Anyone who is called Fionn is a complete arsehole and is a boney and skinny prick. Cracks every fuckin bone in his body every 2 minutes

'See that lad over there'

'Yeh he looks like a Fionn'

'Yeh exactly'

by Irishman2121 October 20, 2019

fionn

Someone who constantly abused power within a hierarchy to achieve further status and recognition. A fionn will try and act cool but fail miserably. Note that a fionn is not the same as a dictator - the difference is that a fionn will not attempt to hide their abusive tendencies from the public, and they take great pride in boasting to others about their status.

Man, that Donald Trump guy is such a fionn.

by PatrickLeedle July 14, 2020

Fionn

Absolute plank and a dickhead

Oh you are sharing a room with fionn I feel bad for you

by That really cool girl August 17, 2019

fionn

A person in power who knowingly abuses such power to get what they want, who is a cunt and generally a bad dude

“Oh my god dude, stop banning people for no reason! You’re such a Fionn”

by DiamondGriefingMC July 16, 2020

Fionn

A genius who will delete your discord server if you mess with him.

I annoyed Fionn....my Discord server got practically massacred a day later.

by DemonicManiac March 28, 2021

Fionn

Fionn fat thick

I never knew that guy Fionn was that FAT! You should've told me.

by TiddyConsumer34 March 9, 2019

Fionn

Faggot, spastic

Fionn is a spastic faggot

by Hajakahajaka November 23, 2018