A Verbal Modifier to change the duration of a Verbal. When you hear this word in front of a Verbal, it means the effect lasts for the rest of the game, or in some cases, FOREVER... unless players have an ability to remove it. From the Accelerant core rules:

"Someone precedes an attack verbal with "Permanent" and calls out an effect with a duration. The effect will last at least for the remainder of the event. Permanent effects may not be removed by resting, but may still be removed by the Cure effect."

In some game campaigns, players may be required to inform their Plot staff of the permanent effect at the end of the game and it may even carry across multiple events!