Riddikulus

Spell Name: Boggart-Banishing Charm

Incantation: Riddikulus

Pronunciation: /rɨˈdɪkələs/ ri-DIK-ə-ləs

Spell Branch: Charms

Magical Discipline(s): Counter-Spells; Defensive

Appearance: None, or a brief flash of white light.

Description: A spell used when fighting a Boggart, "Riddikulus" forces the Boggart to take the appearance of an object upon which the caster is concentrating. When used correctly, this will be a humorous form.

Regulations: Legal

Skill Level: Intermediate

Etymology: "Riddikulus" is an adaptation of the English adjective "ridiculous" as well as of the Latin noun ridiculum ("joke") and Latin verb ridere ("to laugh").

References: First seen in Prisoner of Azkaban, when taught by Lupin. Then seen in Goblet of Fire on a boggart that was in the maze in the Third Task. Finally seen in Order of the Phoenix, when Mrs Weasley tries to cast Riddikulus on a Boggart in Grimmauld Place.

Notes: The effect depends on what the caster is thinking. Neville concentrates on his grandmother's dress, causing a Boggart in the form of Snape to appear in it.