Because we have Latin dictionaries.

Charms

• Adhaereo: Sticks all of the pages in a book together. Pages make a crinkling sound as the charm works.
• Adhaeresco: An easily cast and easily reversed sticking charm.
• Adnecto Bracchium: Binds the victim’s wand hand to his back.
• Air-Sickness Charm: Causes the recipient to feel nauseous while in the air.
• Alucinare: "It's like flying without a broom and colours that aren't in Crayola box. It's groovy like sweets with more sweets on top," Eddie said, quite obviously already high himself.
• Amatius: Covers a room in hearts.
• Amorentia: A charm related to the Cheering Charm that causes the recipient to foster romantic feelings toward the caster temporarily.
• Anti-Perspiring Charms: Charms that prevent excess sweating.
• Avivo Connectrix: The caster places his wand at the temple of his forehead and says the incantation. The caster's thoughts will recur in his dreams that night and, once he awakes, he will remember every detail of his dream.
• Aqueous: Creates water.
• Blasting Charm: Throws someone out of the way.
• Brick-Throwing Charm: Sends a brick flying at an adversary.
• Calming Charm: Calms the recipient.
• Check Charm: Charm used to find errors in Arithmancy equations.
• Concealment Charm: Conceals a mark on an object. The strongest Concealment Charm covers a Dark Mark for twenty-four hours. Reversed with a Revealing Charm.
• Conifulus sprotuous: Makes confetti fall from the sky.
• Contego: Basic blocking charm.
• Contracadaveris: Returns the body to its natural state. Used during an autopsy.
• Conligare: Binds the recipient’s appendages.
• Disillusion Charm: A charm cast on an object that prevents anyone from looking at it closely.
• Disorientation Charms: A category of charms that causes a person to become disoriented.
• Dizzying Charm: Causes the recipient to lose his sense of balance.
• Draught of Living Death sensitivity spells: Measure the potency of various draughts of the living death.
• Incendio: Creates a light fire.
• Engorgement Charm: Self-explanatory.
• Evincio: Binds several objects together.
• Exhilaro: A Cheering Charm.
• Extinguo: Extinguishes flames.
• Faca Formosus: Adds chosen cosmetics to its recipient’s face.
• Foedus Factus: Causes painful boils to appear on skin.
• Funiculus: Causes threads to shoot out of a wand and wrap around an appendage.
• Heaviness Charm: Adds weight to an object.
• Ink-colouring Charms: Change the colour of ink.
• Introspicio Incantatem: The incantation to start breaking down Logic Wards using prime numbers. Most often applied by Unspeakables.
• Mass Stun Spells: Stun a large group of people simultaneously.
• Multa Vultum: Face metamorphosis charm studied by fifth years in 1975.
• Non Purgas: Extends the potency timespan for a charm.
• Obstruo amatorius: Halts the effects of love potions.
• Occuro Croscus: Turns an object orange.
• Orchideous: Makes flowers shoot out of the end of a wand. The type of flower varies on the personality of the individual.
• Pain-relief Charms: Relieve physical pain.
• Plotting Charm: Creates a basic layout of the caster's surroundings. A glowing green mark shows the caster's current location.
• Root Charm: A basic charm from which other charms are derived.
• Recedentia Conspectus: Spoken, “Recedentia conspectus.” A disillusionment charm used on objects.
• Regurgio: Forces a person to vomit.
• Repelling Charm: Causes an object to avoid the person possessing it.
• Repercutio: A shield that deflects an incantation back onto the caster.
• Repulsus: Another shield charm.
• Revealing Charm: Reveals what is concealed by a Concealment Charm.
• Reverso: Turns its recipient upside down.
• Trick Apparation Charm: Charm that mimics the sound of an Apparation.
• Truth Charm: Lie-detector charm.
• Scouring Charms: Used for scouring.
• Sententia: Allows the recipient to feel what the caster is feeling.
• Severing Charm: Severs things.
• Shield Charm: Protects the caster against spells from another individual.
• Slurring Charm: Slurs the recipient's voice.
• Solvo: A form of blocking charm, it dissolves charms.
• Speculo: A shield charm. Reflects an adversary’s charm onto himself.
• Sticking Charm: Keeps something stuck to the ground.
• Sublimate: A charm intended to remove a substance covering a surface.
• Tracking Charm: A charm that creates a map and identifies the location of a specific object.
• Time-Slowing Charm: Slows time. Used in the DoM.
• Velius Abdo: Makes its recipient invisible.
• Veritaserum Charms: Charms being developed by charms specialists that * would hopefully have the same effect as the veritaserum potion without the risks of the potion.
• Voice-Amplifying Charm: Amplifies the caster's voice.

Curses

• Curse of the Bogies: Causes the recipient's body to decrease in temperature.
• Curse of Cassandra: An ancient curse that, when cast, prevents the recipient from speaking the name of the person who cast it. Disappeared from common use after the time of the Founders. Rediscovered by Tom Riddle and taught to Jo Macnair, who in turn taught it to Walden Macnair. The caster must make runic lacerations on the victim's chest and chant in Latin. The incantation is Insensato.
• Familius Curse: A form of Dark Magic that creates a familial bond between two unrelated persons. Two people cut their skin until blood drips from the wounds, press the cuts together and say, “Familius.” A bright light emanates from the wound and the persons for a moment before fading. The cuts leave scars characteristic of Dark Magic. The people enter the bond created by the Familius curse can not curse each other and feel each other’s physical pain. A person bonded by this curse can control his counterpart if his counterpart gives him permission.
• Insensato: The incantation of the Curse of Cassandra, an ancient curse that, when cast, prevents the recipient from speaking the name of the person who cast it. Disappeared from common use after the time of the Founders. Rediscovered by Tom Riddle and taught to Jo Macnair, who in turn taught it to Walden Macnair. The caster must make runic lacerations on the victim's chest and chant in Latin.

Hexes

• Abscido: Bloodlessly severs a body part from the body whole. Croaker's Hex.
• Artus Opposui: Painlessly reverses the recipient’s joints.
• Asphyxiation Hex: Causes suffocation based on the severity of the hex.
• Battering Hex: Causes severe bruising to the affected location.
• Borrire: Causes a person's throat to fill with pink soap bubbles.
• Caeco: Causes the recipient to see only darkness.
• Cassi Inretus: Places its recipient in a cage.
• Conciso: Neatly splits bones.
• Corio Fodium: Creates the extremely painful sensation of millions of needles through the recipient's skin.
• Crapula Manitus: Causes the alcohol consumed by the recipient to remain in his brain indefinitely.
• Cultellus: Makes a sharp metal point come out of the end of the caster's wand.
• Discerpo: Shatters a bone.
• Flagrate: Sets something on fire.
• Homo Sapiens Inflamare: Sets its recipient on fire.
• Impotence Hex: Self-explanatory.
• Malignment Hexes: Painfully misalign the joints of the body.
• Oculus Claudo: Temporarily binds the victim’s eyes shut.
• Oculus Sugillare: Gives the recipient two black eyes.
• Petrificus Manus: Freezes the human hand.
• Pulso: Causes an invisible fist to punch the recipient.
• Quirito: Suffocates the recipient. Smoke rises from the neck.
• Relashio: Forces the recipient’s hand to release its grip.
• Scourgify: Causes extensive scarring on the recipient’s face.
• Strangulator: Strangles a creature more quickly than Quirito. Body buckles and falls to the ground.
• Teleo: Sends an image into a person’s mind. Requires a small group of people to picture the same image at the same time. One of them casts the spell.
• Varicella: Gives the recipient chicken pox.
• Velius Abdo: Causes the person casting the charm to disappear.
• Vomica: Gives the recipient boils.

Other

• Aperius Fides: Reveals the true identity of a person under Polyjuice.