Spells - L

Langlock

Pronunciation: LAN-glock (IPA: ['leɪŋ.lɔk])

Description: Glues the subject's tongue to the roof of their mouth. Created by Snape.
Seen/Mentioned: Used by Harry in Half-Blood Prince on Peeves and on Argus Filch, to general applause.
Suggested Etymology: Latin lingua meaning "a tongue" or "a language"[13] and English lock meaning "to fasten".

Legilimens

Pronunciation: Le-JILL-ih-mens (IPA: [lɛ.'dʒɪl.ɪ.ˌmɛnz])

Description: Allows the caster to delve into the mind of the victim, allowing the caster to see the memories, thoughts, and emotions of the victim.
Seen/Mentioned: Used by Snape on Harry during Occlumency lessons in Order of the Phoenix. Also used non-verbally by Snape on Harry in Half-Blood Prince to allow him to see where Harry had learned the Sectumsempra spell.
Suggested Etymology: Latin legere meaning "to read" and Latin mens meaning "mind".[13]
Notes: See also Legilimency for more information.

Levicorpus

Pronunciation: levi-COR-pus (nonverbal) (IPA: [lɛvɪ.'kɔɹ.pɪs])

Description: The victim is dangled upside-down by one of their ankles, sometimes accompanied by a flash of white light.[27] Created by Snape
Seen/Mentioned: It was originally shown to be a nonverbal-only spell, but by one of the mistakes in the Deathly Hallows, the text shows that Hermione whispers it to lift Harry so he can steal the Cup of Helga Hufflepuff. Harry learns it by reading the notes written by the Half-Blood Prince. He inadvertently uses it on Ron in Half-Blood Prince. In addition, in Order of Phoenix, Harry sees (through the Pensieve) his father, James Potter, use the spell against Snape. The counter curse is Liberacorpus.
Suggested Etymology: Latin levis meaning "light" and Latin corpus meaning "body".

Liberacorpus

Pronunciation: lib-er-ah-COR-pus (nonverbal) (IPA: [lɪˌb.ɛ.ɹæ.'kɔɹ.pɪs])
Description: The counter spell to Levicorpus. Created by Snape.
Seen/Mentioned: Harry uses the spell in Half-Blood Prince to counteract the Levicorpus spell he inadvertently casts on Ron. He also casts it on himself in Deathly Hallows after managing to retrieve the Horcrux from the shelf in the Lestranges vault.
Suggested Etymology: Latin liberare meaning "to free", and Latin corpus meaning "body"

Locomotor-

Pronunciation: loh-koh-MOH-tor (IPA: /ˌlo.ko.ˈmo.tɚ̩/)

Description: The spell is always used with the name of a target, at which the wand is pointed (e.g. "Locomotor Trunk!"). The spell causes the named object to rise in the air and move around at the will of the caster.
Seen/Mentioned: Used by Tonks in Order of the Phoenix to move Harry's trunk from his room. Flitwick similarly uses it to move Sybill Trelawney's trunk after Umbridge sacks her. Parvati Patil and Lavender Brown use this spell to race their pencil cases around the edges of the table. A variation seen in Deathly Hallows is Piertotum Locomotor, which animated the suits of armour in Hogwarts.
Suggested Etymology: Latin loco meaning "to place" and Latin moto meaning "to move about".


Locomotor Mortis (Leg-Locker Curse)

Pronunciation: loh-koh-MOH-tor MOR-tis (IPA: /ˌlo.ko.ˈmo.tɚ̩ ˈmo˞.tɪs/

Description: Locks the legs together, preventing the victim from moving the legs in any fashion.
Seen/Mentioned: Used by Draco on Neville Longbottom in Philosopher's Stone. Also mentioned further on in the book as Ron and Hermione prepare to use it on Snape during a Quidditch match. Used by Harry on Draco, who deflects it, in Half-Blood Prince.
Suggested Etymology: Latin loco meaning "to place", Latin moto meaning "to move about", and Latin mors/mortis meaning "death".


Lumos

Pronunciation: LOO-mos (IPA: ['lu.məʊs])

Description: Creates a narrow beam of light that shines from the wand's tip, like a torch. [20]
Seen/Mentioned: First seen in Chamber of Secrets and then constantly throughout the series.
Suggested Etymology: Latin lumen meaning "light".[13]
Notes: The counter spell, Nox, extinguishes the light. The caster of this spell can cast other spells while this spell is in effect.