While the definitive account of wizards and Muggles' interactions acrossHarry Potterhistory is shrouded in mystery, some clues suggest these groups having once been at war with one another. As two seemingly distinct worlds, it’s not out of the question to think that clashes and hidden conflicts may have shaped the Wizarding World as we know it.

The evilLord Voldemort indeed wished to exterminate all Muggles, but everything we know aboutthe First Wizarding Warstates that it occurred without outright revealing the existence of magic to our reality. However, one shocking theory posits that long beforethe rise of the Death Eaters, Muggles and wizards faced off in brutal battles of violence and bloodshed.

Voldemort casting Avada Kedavra next to Harry Potter from Sorcerer’s Stone and Hagrid

Muggles' “Abracadabra” May Have Originated From “Avada Kedavra”

A Reddit theory from u/Cabbiecar1001has linked everyday phrases we use in the real world to a potential war between wizards and Muggles in theHarry Potteruniverse. Their central point related to the magical phrase “Abracadabra” and its striking similarities tothe wizard-killing curse “Avada Kedavra.”

This theory suggests that over time, as memories of a conflict between the two factions faded,Muggles' hazy memory of their past interactions with wizardsled to the phrase’s pronunciation changing over time. Having been absorbed into Muggle folklore, the once shocking curse transformed into a lighthearted saying used by harmless stage magicians.

Richard Griffiths Fiona Shaw and Harry Melling as the Dursleys in Harry Potter

With the implication being these groups used to have a closer connection, ‘Abracadabra’ stands as the last remnant of a suppressed history. Whether this was a deliberate attempt to bury the past, was distorted by wizards using memory charms, or was simple happenstance born from centuries of cultural drift, the result is the same: a forgotten war hiding in plain sight.

The Wizard/Muggle Wars May Have Spawned The Death Eaters

Ifwizards and Muggles were once embroiled in an active conflict, it makes sense that dark ideologies could have developed from this antagonistic atmosphere. Out of this violence, the Death Eaters emerge, proving that Lord Voldemort’s sinister belief in wizard purity and the elimination of non-magical families was not born in isolation.

With deep-rooted distrust, fear, and prejudice between the groups, pure-blood supremacists could have passed on their bigotry through generations and informed the philosophy of the Death Eaters. This casts this group of dark wizards as not just the misguided followers of a dangerous leader but as the ideological descendants of wartime zealots.

A blended image features Harry Potter using his wand and a dragon breathing fire

The Death Eaters’ obsession with bloodlines, secrecy, and genocide could be echoes of a time when humans were well aware of the threat of magic and did everything in their power to stand against it. If Muggle technology were able to threaten the impact of their dark magic, it makes sense that Voldemort chooses to remain in the shadows.

The fear that the conflict could be reignited if Muggles knew about the existence of wizards accounts for the International Statute of Wizarding Secrecy, a wizarding law that was first signed in 1689. The law was passed by the International Confederation of Wizards to safeguard the wizarding community from Muggles and to hide their presence from the world.

Ralph Fiennes as Lord Voldemort looking afraid in Harry Potter

Other Clues Hinting Wizards & Muggles Were Once At War In Harry Potter

It’s not just innocuous phrases like ‘Abracadabra’ that point to a past conflict between wizards and Muggles. There are numerous elements from the wizarding world that have found their way into Muggle folklore and cultural history. With elves, dragons, and the concept of magic itself having an important place in popular culture, this likely all stems from a forgotten war.

One dark example isthe ‘mudblood’ slurthatHarry Potterreaders first heard uttered by Draco Malfoy toward Hermione Granger. As a shocking and hate-filled word, the fact that ‘mudblood’ has the power to leave all the surrounding Hogwarts students totally shocked at its usage points to a dark history between wizards and Muggles.

Harry Potter Franchise Poster

The emotional reaction suggests that this phrase carries more than just contemporary prejudices and actually stands as a remnant of long-standing cultural ties and violent trauma. If Muggles and wizards were once enemies at war, then a hurtful term to describe taboo mixing of magical and non-magical bloodlines may have emerged.

Why Don’t Muggles Remember Being At War With Wizards?

If a war between Muggles and wizards did genuinely occur, then the most obvious question is why can’t humanity remember it? One answer could be thatthe wizarding world used memory spells to obliterate knowledge of the conflict from Mugglesin a bid to suppress the war and keep peace between these two sides of society.

This war could have also taken place so long ago that it’s been lost to history, and neither Muggles nor wizards are aware that it happened. This explains the lingering references across folklore that have become distorted over time. Much like with Homer’sOdyssey, it’s difficult to ascertain what aspects were inspired by real history and what were merely allegorical.

No matter what the truth is,it’s clear that the Ministry of Magic has put in strict policies to ensure the separation of the wizarding and Muggle worlds. This could have been to put an end to human-led witch hunts during the time of the Salem witch trials, but it’s equally likely to be as a result of a more all-encompassing conflict.