Harry Potter Wiki
Harry Potter Wiki

Harry Potter speaking Parseltongue to a boa constrictor

"Hannah, he’s a Parselmouth. Everyone knows that’s the mark of a Dark Wizard. Have you ever heard of a decent one who could talk to snakes? They called Slytherin himself Serpent-tongue."
Ernest Macmillan regarding Parseltongue's infamous reputation[src]

Parseltongue was the language of serpents (as well as other magical serpentine creatures, like the Runespoor and Basilisk) and those who could converse with them. A wizard or witch who could speak Parseltongue was known as a Parselmouth. It was a very uncommon skill, and was known to be an almost exclusively hereditary trait.[1] Not counting Herpo the Foul, who predated him by several centuries,[2] nearly all known Parselmouths were descended from Salazar Slytherin,[1] with Harry Potter being a notable exception (although he gained his ability as a Parselmouth in an unorthodox manner).[3]


"And the second man’s voice changed. He started making noises such as Frank had never heard before; he was hissing and spitting without drawing breath. Frank thought he must be having some sort of fit or seizure."
— The Muggle Frank Bryce overhearing Lord Voldemort speak in Parselmouth in the Riddle House[src]

Parseltongue was, when spoken, a hissing sound, similar to that of a snake; as such, normal people could not understand it[1][4] (one known exception being Dumbledore).[5] Apart from merely communicating with serpentine lifeforms, Parselmouths also seemed to be able to influence the will of serpents to a certain extent.[1][6] Aside from serpent-based creatures, Parselmouths could communicate with each other with the language, as Harry understood Tom Riddle's commands to the Serpent of Slytherin,[6] and the House of Gaunt communicated with each other almost exclusively in Parseltongue.[7] While inherited, Parseltongue usually required the speaker to face a snake-based creature or object shaped like a snake (e.g. a carving); more proficient speakers may have been able to speak it at will, as the Gaunt family was very proficient in the language enough so for Morfin to speak to Bob Ogden with it,[7] while Voldemort could speak to the Statue of Slytherin to release the basilisk within.[6]


"The boy can talk to snakes, Dumbledore, and you still think he's trustworthy?"
Cornelius Fudge's prejudice against Parselmouths[src]

The ability to actually speak Parseltongue — not just imitate it as Ron Weasley did — was considered an attribute of a Dark Wizard,[1][8] which was partly due to the fact that both Salazar Slytherin and Lord Voldemort possessed this ability.[1][6] Another notable Dark Wizard who was also a Parselmouth was Herpo the Foul.[2] However, as Albus Dumbledore pointed out, there were Parselmouths among the great and good as well, the most well-known of which was Harry Potter.[9] Paracelsus, a notable alchemist and a "medical genius", was credited with the discovery of Parseltongue in the sixteenth century,[10][11] despite the existence of speakers like Herpo the Foul or Salazar Slytherin in the classical and medieval ages. Because of the uncommonness of Parselmouths, Voldemort came to believe it made him special.[9]

An unknown member of the Dark Force Defence League once stated when asked regarding the matter by Rita Skeeter — "Personally, I would be highly suspicious of anybody who could converse with snakes, as serpents are often used in the worst kinds of Dark Magic, and are historically associated with evildoers."[8]

Harry Potter as a Parselmouth

"I spoke a different language? But — I didn’t realise — how can I speak a language without knowing I can speak it?"
Harry Potter after he speaks Parseltongue[src]

Lord Voldemort passed the ability to speak and understand Parseltongue on to Harry Potter when he attacked him in infancy in 1981, inadvertently and unknowingly making him into a Horcrux.[3] Harry first experienced conversation with snakes at age ten when he was taken to the zoo with his cousin Dudley Dursley and found himself communicating with a snake while in the reptile exhibit. Harry inadvertently caused the glass of the snake's tank to vanish, enabling it to escape.[12]

Harry speaking Parseltongue during the Duelling Club

Harry was not consciously aware of his ability to speak Parseltongue until 1992; he was pitted against Draco Malfoy in the Duelling Club and was able to communicate with the snake Draco conjured to attack him, telling it not to attack Justin Finch-Fletchley.[1] This caused hysteria among his fellow students because writing on the walls of Hogwarts Castle foretold that the Heir of Slytherin would open the Chamber of Secrets, unleashing a monster that would attack the school's Muggle-born students.[13] Even Severus Snape, who was previously enjoying Harry's horror at the snake, became horrified himself when he learned of Harry's ability to communicate with snakes.[1] The Heir of Slytherin was in fact Voldemort, but Harry was able to gain access to the Chamber by speaking the password in Parseltongue, and subsequently killed the basilisk within. It was shortly after this incident that Harry learned how he acquired the ability.[6]

When the wizarding world discovered Harry's ability to speak Parseltongue, courtesy of Rita Skeeter, people began to doubt his words, as Cornelius Fudge refused to believe Harry's claim of Voldemort's rebirth partially due to being prejudiced to Harry's ability to speak the language.[14]

Harry also used his skill in Parseltongue to open Salazar Slytherin's Locket.[15] When Harry, Ron Weasley, and Hermione Granger returned to Hogwarts to search for Rowena Ravenclaw's Diadem, Ron managed a weak imitation of Parseltongue to re-open the Chamber of Secrets so that he and Hermione could fetch basilisk fangs, which Hermione used to destroy Helga Hufflepuff's Cup.[16]

After Lord Voldemort destroyed the fragment of his soul residing in Harry, Harry seemingly lost the ability to speak Parseltongue, about which he was glad and relieved.[5]

Harry Potter never tried to use again the ability during the next twenty-two years, but in 2020, despite his previous belief that the ability was lost forever to him, Harry had somehow regained the ability to speak and understand Parseltongue again if he truly ever lost it in the first place. While initially reluctant to do so and only after Hermione insisted that he had to try, Harry successfully spoke Parseltongue to open the enchanted room of Delphini while searching for his missing son, Albus Potter. Later, in order to impersonate the Dark Witch's father, Lord Voldemort, Harry again used his ability to speak Parseltongue.[17]

Known Parselmouths

Salazar Slytherin, the most famous Parselmouth

Unconfirmed potential Parselmouths

The ability to speak Parseltongue being known to be hereditary, the blood relatives of known Parselmouths are potentially Parselmouths themselves.

Other instances of Parseltongue

Harry and Bathilda Bagshot's body inhabited by Nagini speak Parseltongue

People who were not Parselmouths but were able to speak or understand Parseltongue through various means:

Behind the scenes

  • J. K. Rowling has stated that she took the name Parselmouth from an "old word for someone who has a problem with the mouth, like a hare lip".[22]
  • When Harry Potter and Hermione Granger went to Godric's Hollow in 1997, Nagini (inside the corpse of Bathilda Bagshot) tells Harry to "Come!" from the next room in Parseltongue. In reaction, Hermione jumps and clutches Harry's arm, and the two of them obey the command.[21] It is unknown how Hermione seemed to understand this command, though it could be that she did not hear it well, and merely followed Harry. She could also have been frightened by the hissing sound she heard and then followed Harry.
  • In the Philosopher's Stone film, Harry converses with a Burmese python, rather than a Boa Constrictor.
  • Whenever it was spoken in the films, Parseltongue went untranslated except for one scene in Harry Potter and the Deathly Hallows: Part 2 when Voldemort was speaking to Nagini, where it was given subtitles. It was also heard in English in the first film when Harry was talking in the zoo.
  • In the films, Parseltongue is depicted as sounding like a sibilant-filled language with readily discernible phonemes created by Dr Francis Nolan (as listed in the credits for Harry Potter and the Deathly Hallows). In the novels, it is only ever described as a low hissing noise, easily missed by non-Parselmouths — a far cry from the rather loud versions from the films.
  • In the last two films, as Harry draws near a Horcrux he can hear, in addition to a whining noise, a faint voice which seems to speak in Parseltongue.
  • It is possible that Parseltongue comes in variants for different languages, rather than being understood as the language spoken by the Parselmouth. The boa constrictor that Harry Potter converses with at the zoo uses the Portuguese word amigo rather than the English friend.

External links


Notes and references

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 Harry Potter and the Chamber of Secrets, Chapter 11 (The Duelling Club)
  2. 2.0 2.1 2.2 2.3 Fantastic Beasts and Where to Find Them
  3. 3.0 3.1 Harry Potter and the Deathly Hallows, Chapter 35 (King's Cross)
  4. 4.0 4.1 Harry Potter and the Goblet of Fire, Chapter 1 (The Riddle House)
  5. 5.0 5.1 5.2 July 30, 2007 Bloomsbury Live Chat with J. K. Rowling
  6. 6.0 6.1 6.2 6.3 6.4 6.5 6.6 Harry Potter and the Chamber of Secrets, Chapter 17 (The Heir of Slytherin)
  7. 7.0 7.1 7.2 7.3 7.4 Harry Potter and the Half-Blood Prince, Chapter 10 (The House of Gaunt)
  8. 8.0 8.1 Harry Potter and the Goblet of Fire, Chapter 31 (The Third Task)
  9. 9.0 9.1 9.2 Harry Potter and the Half-Blood Prince, Chapter 13 (The Secret Riddle)
  10. Harry Potter and the Philosopher's Stone (video game)
  11. Harry Potter and the Chamber of Secrets (video game)
  12. 12.0 12.1 Harry Potter and the Philosopher's Stone, Chapter 2 (The Vanishing Glass)
  13. Harry Potter and the Chamber of Secrets, Chapter 9 (The Writing on the Wall)
  14. Harry Potter and the Goblet of Fire, Chapter 36 (The Parting of the Ways)
  15. Harry Potter and the Deathly Hallows, Chapter 19 (The Silver Doe)
  16. 16.0 16.1 Harry Potter and the Deathly Hallows, Chapter 31 (The Battle of Hogwarts)
  17. 17.0 17.1 Harry Potter and the Cursed Child
  18. 18.0 18.1 Harry Potter and the Half-Blood Prince, Chapter 17 (A Sluggish Memory)
  19. Writing by J.K. Rowling: "Chamber of Secrets" at Wizarding World
  20. 20.0 20.1 20.2 20.3 Writing by J.K. Rowling: "Ilvermorny School of Witchcraft and Wizardry" at Wizarding World
  21. 21.0 21.1 Harry Potter and the Deathly Hallows, Chapter 17 (Bathilda's Secret)
  22. 2003 Albert Hall Interview with J.K. Rowling at Accio Quote