"At that moment Neville toppled into the common room. How he had managed to climb through the portrait hole was anyone's guess, because his legs had been stuck together with what they recognised at once as the Leg-Locker Curse. He must have had to bunny hop all the way up to Gryffindor tower."
—Description of the curse[src]

The Leg-Locker Curse[4] (Locomotor Mortis)[4], also known as the Leg Locking Spell[5] was a curse[1] that bound the legs of the victim together.[4] It was most often used by experienced witches and wizards in duels, or in friendly wizard races.[5] This curse was one of the dark charms found in the Dark Arts spellbook Curses and Counter-Curses by Vindictus Viridian. There existed a counter-curse of unknown incantation; Hermione Granger used it to reverse the usage of the curse Draco Malfoy used on Neville Longbottom.[4]

Known uses

Ron Weasley: "You have got to start standing up to people, Neville."
Neville Longbottom: "How? I can barely stand, at all!"
— Usage by Draco Malfoy on Neville Longbottom[src]


Caster(s) Victim(s) Date Notes
Draco Malfoy Neville Longbottom 1991 Used it to bully him.[4]


Caster(s) Victim(s) Date Notes
Harry Potter Draco Malfoy Early May, 1997 Used it nonverbally, but unsuccessful, because he missed and spell backfired of the wall behind Malfoy's ear and smashing the cistern, during their duel in the Boys bathroom.[6]
Harry Leg-Locker Curse

Known practitioners


This spell's incantation is derived from the English word locomotor, meaning "of or relating to locomotion"[8] and the Latin word mortis, meaning "death."[9] Overall, the incantation roughly means "killing locomotion" or in other words, stopping someone from moving normally.

See also

Behind the scenes


Notes and references

  1. 1.0 1.1 As the name of the spell is "Leg-Locker Curse", the title makes it rather evident that this spell is a curse and not a jinx, hex or charm.
  2. 2.0 2.1 Harry Potter and the Philosopher's Stone (video game)
  3. 3.0 3.1 Harry Potter and the Chamber of Secrets (video game)
  4. 4.0 4.1 4.2 4.3 4.4 4.5 4.6 Harry Potter and the Philosopher's Stone, Chapter 13 (Nicolas Flamel)
  5. 5.0 5.1 The Cast-a-Spell handbook, as can be viewed here.
  6. 6.0 6.1 Harry Potter and the Half-Blood Prince, Chapter 24 (Sectumsempra)
  7. Harry Potter: Wizards Unite
  8. See this entry on Google
  9. See this entry on Google Translate.
  10. Harry Potter and the Philosopher's Stone, Chapter 13 (Nicolas Flamel) (Page 162, Paragraph 7, Lines 4;5 UK Edition)

Charms (class)
PS Wingardium Leviosa feather
Charmbook writers and developers
Blagdon Blay · Daisy Pennifold · Delfina Crimp · Miranda Goshawk · Jarleth Hobart · Basil Horton · Randolph Keitch · Levina Monkstanley · Orabella Nuttley · Mnemone Radford · Scarpin · Elliot Smethwyck · Felix Summerbee · Fred Weasley · George Weasley · Violeta Stitch
Professors Fortinbras · Filius Flitwick
Textbooks Achievements in Charming · Extreme Incantations · Quintessence: A Quest · The Standard Book of Spells
Charms studied at Hogwarts
Banishing Charm (Depulso) · Blackboard Writing Spell · Bubble-Head Charm · Cheering Charm · Cistem Aperio · Cleaning Charm · Colour Change Charm (Colovaria) · Confundus Charm (Confundo) · Dancing Feet Spell (Tarantallegra) · Descendo · Disillusionment Charm · Drought Charm · Eradication Spell (Deletrius) · Engorgement Charm (Engorgio) · Exploding Charm (Bombarda) · Fire-Making Spell (Incendio) · Freezing Charm (Immobulus) · Freezing Spell (Glacius) · Full Body-Bind Curse (Petrificus Totalus) · General Counter-Spell (Finite Incantatem) · Gouging Spell (Defodio) · Growth Charm · Knitting Charm · Knockback Jinx (Flipendo) · Leg-Locker Curse (Locomotor Mortis) · Levitation Charm (Wingardium Leviosa) · Locking Spell (Colloportus) · Locomotion Charm (Locomotor) · Mending Charm (Reparo) · Memory Charm (Obliviate) · Muffliato Charm (Muffliato) · Nonverbal spells · Pack Charm (Pack) · Red Sparks (Vermillious) · Reductor Curse (Reducto) · Scouring Charm (Scourgify) · Seize and Pull Charm (Carpe Retractum) · Severing Charm (Diffindo) · Shrinking Charm (Reducio) · Silencing Charm (Silencio) · Slowing Charm (Arresto Momentum) · Skurge Scouring Charm (Skurge) · Softening Charm (Spongify) · Spell for growing legs · Substantive Charm · Summoning Charm (Accio) · Tickling Charm (Rictusempra) · Unlocking Charm (Alohomora) · Vinegar into Wine · Wand-Extinguishing Charm (Nox) · Wand-Lighting Charm (Lumos) · Lumos Maxima · Water-Making Spell (Aguamenti)

Curses and Counter-Curses
Spells included in the book: Full Body-Bind Curse · Leg-Locker Curse · Jelly-Legs Curse · Pimple Jinx · Stickfast Hex · Tickling Hex · Tongue-Tying Curse · Hair Loss Curse
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