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Don't mess with a fenian he'll fuck you up!
fenian by Main Clart April 7, 2003
Related Words
Something that is used to describe an Irish man but Glasgow celtic (British) fans like to pretend to be
THAT British club Celtic like to think they are Irish Fenians but they are British as Brixton
Fenian by Order number 1690 November 29, 2021
Used by people not living in Ireland or Northen Ireland to offend the inhabitants. If the person being abused is a Catholic then he will be offended that someone not of his blood is calling him thus and is most likely to twat the offender. If aimed at a protestant (usually from Northern Ireland) then he will be vexed by the fact he is being compared to a Fenian and is most likely to twat the offender.
See you fenian cunt, i'll cut you first!

Nice on nancy, cop a load of this!
Fenian by Rikki Sixx May 13, 2005
The Fenians were members of the Irish Republican Brotherhood (IRB) in Ireland in the 1860s. They are essentially the pioneers of modern terrorism, and used violent methods in order to gain what they wanted - in this case they wanted Ireland to be made a Republic, separate from Britain and with their own Parliament.
Members of the Irish Republican Brotherhood were Fenians.
Fenian by oreosandlemons October 22, 2014
Irish bandit from the 18th century. laterly term adopted in the US for Irish freedom fighters
the red coats wont go in the place is full of fenians
fenian by Brian October 9, 2003
A word that describes Irish Catholics, or Irish American Catholics, who are mostly Irish Republican, native to Ireland, and are Catholic. Fenian can be used as a slur to insult an Irish Catholic for their struggles in the Troubles in Northern Ireland, being discriminated against by the Loyalist Protestants who hated Irish Catholics.
"Good old Jimmy boy is a real Fenian boy"
Fenian by Washougal Bhoy January 10, 2016