"...perhaps most useful of all, Muffliato, a spell that filled the ears of anyone nearby with an unidentifiable buzzing, so that lengthy conversations could be held in class without being overheard."
—Use of the charm[src]

The Muffliato Charm (Muffliato) is a charm used to fill the ears of any person in the vicinity of the caster with an unidentifiable buzzing sound so as to allow conversing without being overheard. The spell was invented by Severus Snape and recorded during his time as a student at Hogwarts School of Witchcraft and Wizardry.


Harry Potter used this spell multiple times during the 1996-1997 school year after discovering the Half-Blood Prince's copy of Advanced Potion-Making.

Hermione Granger originally disapproved of using the spell, but came to use it herself when it was needed; for example, to protect the campsites she shared with Harry Potter and Ron Weasley when they hunted for Lord Voldemort's Horcruxes between 1997-1998.

Known practitioners


  • The English word muffle means "to make a sound less distinct by covering its source."

Behind the scenes


Notes and references

  1. Harry Potter and the Deathly Hallows - Chapter 14 (The Thief)
  2. Scholastic Pronunciation Guide
  3. Harry Potter and the Deathly Hallows - Chapter 15 (The Goblin's Revenge)
  4. 4.0 4.1 Harry Potter and the Half-Blood Prince - Chapter 19 (Elf Tails)
  5. As the incantation is derived from English "muffle", it is likely that is the effect.
  6. Harry Potter and the Half-Blood Prince - Chapter 12 (Silver and Opals) - "Harry had already attempted a few of the Prince’s self-invented spells."
  7. Pottermore - All about... Severus Snape
  8. Harry Potter and the Goblet of Fire - Chapter 27 (Padfoot Returns)