Top Definition
The GM is always right. No matter the Dice rolls he wins, The GM always wins
Player: W00t! I rolled a crit again! your Dragon is dead in two hits!
Gm: No it isn't.
Player: What? Why not?
Gm: GM Fiat...
Player: damnit!
by Arimmus October 16, 2010
1 Word related to GM Fiat

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