Revulsion Jinx

Relashio releases a jet of fiery sparks. Underwater, this spell fires a jet of boiling water.

Uses
Harry used this spell against the Grindylows during the second task Harry Potter and the Goblet of Fire.

Note that this incantation was given a rather different result in Harry Potter and the Half-Blood Prince when Ogden used it to knock Marvolo backward - away from Merope, whom he was attempting to strangle. This is not consistent with the previous usage of this incantation.

The incantation was again given a different result when Hermione Granger used it to force the chains to withdraw into the arms of the chained chair and when Ron Weasley attempted to use it on Peter Pettigrew's silver hand (although this last didn't work).

Harry Potter used this to release the dragon from its chains in Gringotts' high security area.