"With the force of a bullet, the wad of chewing gum shot out of the keyhole and straight down Peeves's left nostril; he whirled right way up and zoomed away, cursing."
— Description[src]

Waddiwasi was the incantation of a charm[2] that could be used to propel a small wad of material at high velocity.[1]


During the 1980s at Hogwarts School of Witchcraft and Wizardry, students would use this spell while duelling to shoot gum at their opponent causing some damage.[2]

On 2 September 1993, Remus Lupin, the Professor of Defence Against the Dark Arts at Hogwarts School of Witchcraft and Wizardry during the 1993–1994 school year, used this spell to dislodge a wad of gum from a door lock directly at Peeves, the school's Poltergeist.[1]


"Waddiwasi" comes from two words. "Vadd" and "vas-y". "Vadd" is a Swedish word that can mean "wadding" and "vas-y" is French term that means "go ahead" or "Come on!" Together, they can roughly mean "The wad goes ahead."

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