• Halloween draws from both Celtic and Christian traditions.
• While it's always had a morbid, spooky vibe, the festivities have changed quite a lot over the centuries.
Halloween is the spookiest night of the year.
It's also a boon to the retail industry. In the US, spending on costumes and candy may reach a record high this year, Business Insider reported.
And the Halloween fever isn't contained to the States, either. In fact, people around the world celebrate the holiday in many different ways.
But where did all these strange practices come from? Turns out, a lot of these customs date back centuries. The holiday has changed over time, transforming from an ancient tradition to the flashy fright-fest we know and love today.
Let's take a look at the origins of some of our favorite Halloween traditions:
SEE ALSO: Here's how Easter turned into a holiday with pastel bunnies and chocolate eggs
The word 'Halloween' was first popularized in a poem
Scottish poet Robert Burns helped to popularize the word "Halloween" with his 1785 poem of the same name.
So where does the name itself come from? According to the Online Etymology Dictionary, it's actually two words smushed together. "Hallow"— or holy person — refers to the saints celebrated on All Saints' Day, which is November 1. The "een" part of the word is a contraction of "eve"— or evening before.
So basically, Halloween just an old-fashioned way of saying the night before All Saints' Day — also called Hallowmas or All Hallows' Day.
This comes from the fact November 1 is All Saints' Day, a Christian feast dedicated to celebrating the faithful departed, including all the saints. In Christian tradition, people start celebrating major feasts the night before they take place — take Christmas Eve, for instance.
The day's morbid traditions go back to ancient times
Historians have linked Halloween to Samhain, the Celtic festival of the summer's end celebrated in Ireland, Scotland, and the Isle of Man.
According to Celtic mythology, the veil between the Otherworld and our world thins during Samhain, making it easier for spirits and the souls of the dead to return.
People would make offerings of food in order to get on the good side of these spirits and departed ancestors, according to the Mirror.
Allhallowtide, which includes All Saints' Eve, All Saints' Day, and the subsequent All Souls' Day, was initially celebrated in the spring, during the early years of the Church.
Pope Gregory IV switched it to the current date in 837, according to Britannica. His reasons were unclear, although influence from Celtic factions of the church and the fact that it makes sense to commemorate death during the fall are possibilities.
Bobbing for apples used to be more than just a splashy party game
Halloween has come to be most closely associated with the pumpkin, but apples have played an important role in its history.
After all, apples make numerous appearances in Celtic mythology and are often connected to the Otherworld.
Bobbing for apples remains a popular party game.
The reason? Well, the practice used to be considered a form of divination performed around Halloween, according to NPR. That's right — people would dunk their heads in a vat of water and try to bite into floating fruit in a quest to figure out their future spouse.
Ladies would mark an apple and toss it into the tub. The thinking was they'd be destined to whoever pulled it out of the water.
See the rest of the story at Business Insider