What Is Halloween? All About the Holiday's Origins

We all know what comes around each October: spooky season! That means it's time to come up with the perfect costume and stock up on candy, of course, but why exactly is it we take part in these traditions? Do we really know why Halloween is celebrated and what it's all about?

While we are on the subject, there are many other questions to answer too: What are the origins of Halloween and what goes on its history timeline? Where did the festivals tied to it come from? Is it dark or evil? Does it have anything to do with Christianity? Here we answer all those questions and more. Read on for the "why" behind our all our fun Halloween party games and spooky treats this season.

Now it's time to get to all those answers about what Halloween is and why we celebrate it before Thanksgiving and Christmas sneak up on us!

How to Celebrate Halloween This Year:

• Charmingly Country Pumpkin Carving Ideas
• Fun Halloween Trivia Questions for Spooks and Giggles
• Best Trio Halloween Costumes for Your BFFs or Family

The current English name Halloween traces back to medieval Christianity. The word hallow is derived from the Middle and Old English words for holy. As a noun, it can also mean saint. In those days, the Christian holiday we know as All Saints' Day was called All Hallows' Day, and the day before, when an evening mass was held, was All Hallows' Eve. That name eventually got shortened to Halloween.

Every year it's held on October 31 for two reasons: a pagan one and a Christian one.

The ancient Gaelic festival of Samhain, which occurred on November 1 but kicked off the evening before, is considered the earliest known root of our secular Halloween traditions. It marked a pivotal time of year when seasons changed, but more importantly, observers also believed the boundary between this world and the next became especially thin, enabling them to connect with the dead. This is also where the history of Halloween gains its "haunted" connotations.

As the etymology of the name suggests, Halloween has Christian roots too. Celebrations of Christian martyrs and saints date back to 4th-century Rome. In the early 7th century, Pope Boniface IV put All Saints' Day on the calendar when he dedicated the Pantheon in Rome to the saints, but the day was May 13. In the next century, Pope Gregory III changed the day to November 1 when he dedicated a chapel in St. Peter’s Basilica to the saints. Yet another century later, Pope Gregory IV added All Saints' Day to the universal Christian calendar, officially extending the celebration from Rome to churches everywhere.

With the Christian celebration of All Saints' Day on November 1 came All Hallows' Eve, or Halloween, on October 31, as well as All Souls' Day on November 2—a three-day holiday collectively called Hallowtide.

Though largely a secular celebration today, Halloween has both Christian and pagan roots.

During the Middle Ages, as the Christian Roman holiday of All Saints' Day spread to other Christianized areas, Hallowtide traditions merged with local cultures. In Celtic regions that formerly celebrated Sahmain, the local Christian Halloween traditions that arose included jack-o-lanterns, bonfires, and costumes.

Did these local Christian Halloween customs evolve from older pagan traditions? Most scholars agree that they did, though Catholic sources dispute the notion as lacking historic evidence.

At the heart of the controversy is the fact that the ancient Celts did not leave written records, though we do have folklore (stories passed down by word of mouth) and artifacts, such as a 1st-century B.C.E. bronze calendar found in France that references Sahmain. Though folklore studies provide context about Sahmain, for the layperson who, as scholar Carolyn Emerick puts it, "does not sit around reading folklore journals from the 1800s," it can be difficult to wrap your head around.

Theorizing about the pagan roots of the jack-o-lantern, which evolved into an Irish Christian Halloween custom, Emerick explains, "We arrive at this conclusion not by hard evidence like a written record because the inhabitants of Britain did not record things in writing during the pre-Christian era. We assume the pagan origins of folk customs like the jack-o'-lantern by analyzing them within the context and framework in which they are presented in the folklore and the larger folk culture."

An early precursor to trick-or-treating is believed to be "souling," the tradition of going door to door asking for "soul cakes," a treat similar to biscuits, in exchange for prayers for the dead in purgatory. (Technical note: Soul cakes originated as part of the All Souls' Day holiday on November 2.) The tradition also involved dressing up, as we see in one recollection of souling in England, published in 1886, that describes children in "fantastic costume."

The Scottish practice of guising, a secularized version of souling, swapped the prayers for tricks. The costumes evolved too, taking a scary turn when young Scottish and Irish pranksters got the idea to spook unsuspecting neighbors.

Eventually, this evolved into the tradition of trick-or-treating in the United States. The candy-grabbing concept became mainstream in the early to mid-1900s, during which families would provide treats to children in hopes that they would be immune to any holiday pranks.

The Halloween holiday remains a popular in America today, but it actually almost didn't make it across the Atlantic. The Puritans were disapproving of the holiday's pagan roots, so they didn't take part. The American colonial Halloween celebrations that did take place featured large public parties to commemorate the upcoming harvest, tell ghost stories, sing, and dance.

It was not until the second half of the 19th century as Irish and Scottish immigrants began to arrive in America in greater numbers that the holiday took hold as part of the national zeitgeist. It's estimated that by the early 20th century, Halloween was celebrated across North America by the majority of (candy-loving, costume-wearing) people.

The early pagan holiday of Samhain involved a lot of ritualistic ceremonies to connect to spirits, as the Celts were polytheistic. While there isn't a lot of detail known about these celebrations, many believe the Celts celebrated in costume (granted, they were likely as simple as animal hides) as a disguise against ghosts, lit jack-o-lanterns, and enjoyed special feasts.

Over time, as Christianity took over and the pagan undertones of the holiday were lessened.

The Irish custom of lighting jack-o-lanterns to ward away evil spirits came to have a Christian-themed allegory attached to it: A character named Stingy Jack outsmarts the Devil and avoids Hell, but his sinful dealings keep his soul out of Heaven. Instead, his soul roams the Earth, lighting his path with an ember held in a carved radish. Though Christianized, the ghostly element of the story recalls the blurred boundary between the living and dead on the night leading into Sahmain.

Other mystical rituals of earlier times evolved into more lighthearted fun and games. For example, the somewhat heavy concept of connecting to the dead was replaced with the more lighthearted idea of telling the future. Bobbing for apples, for example, became popular as a fortune-telling game on All Hallows' Eve: Apples would be selected to represent all of a woman's suitors, and the guy—er, apple—she ended up biting into would supposedly represent her future husband. In fact, Halloween previously posed a huge (albeit rather superstitious) matchmaking opportunity for young women in the 19th century.

Another popular All Hallows' Eve ritual was mirror-gazing, as people hoped to catch a vision of their future by looking into the mirror. There are also reports of fortune-cookie-like favors being given out during earlier times. People wrote messages on pieces of paper in milk, and the notes were then folded and placed into walnut shells. The shells would be heated over a fire, causing the milk to brown just enough for the message to mystically appear on the paper for the recipient.