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Halloween

American  
[hal-uh-ween, -oh-een, hol-] / ˌhæl əˈwin, -oʊˈin, ˌhɒl- /
Or Hallowe'en

noun

  1. the evening of October 31; the eve of All Saints' Day; Allhallows Eve: observed especially by children in costumes who solicit treats, often by threatening minor pranks.


Halloween British  
/ ˌhæləʊˈiːn /

noun

  1. the eve of All Saints' Day celebrated on Oct 31 by masquerading; Allhallows Eve

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

What is Halloween? Halloween is a holiday on October 31 that’s essentially a celebration of spooky and scary stuff, like ghosts, witches, monsters, and haunted houses. It’s traditionally celebrated by dressing in costumes, decorating with things like jack-o’-lanterns (carved pumpkins) and fake spiderwebs, and trick or treating—going door to door to collect candy or other treats from people who are giving it out. The trick part of trick or treat is a reference to the pranks that kids sometimes play on Halloween. Halloween is especially celebrated by children, but teens and adults commonly celebrate it, too, such as by having parties (often costume parties), watching scary movies, giving out candy to kids, eating some of that candy, and then eating some of the candy that kids bring home. Halloween is a secular (nonreligious) holiday, but its name has roots in the Christian holiday Allhallows, better known as All Saints’ Day. Another name for Halloween is Allhallows Eve (the night before Allhallows). Halloween is commonly used as a modifier in phrases like Halloween costume, Halloween party, Halloween candy, and Halloween night. Example: Don’t give me this trunk or treat stuff—I want a classic Halloween, with trick or treating and haunted houses and my neighbor disguising himself as a stuffed scarecrow so he can pop up and scare kids when they try to take more than one piece of candy from the bowl.

Etymology

Origin of Halloween

First recorded in 1550–60; (All)hallow(s) + e(v)en 2

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

"We were all outside the venue during Halloween and this black and white cat just kind of appeared, and started hanging out," she explained.

From BBC Aug. 9, 2026

Jeffrey Gundlach, who runs DoubleLine Capital and does not hand out compliments like Halloween candy, put it plainly in a post on social-media platform X: “Even Lacy Hunt has turned bearish, to his credit.”

From MarketWatch Jul. 27, 2026

The one-day, one-park promotion runs from July 20 through October 8, a timeframe that includes Halloween celebrations at Disneyland.

From Los Angeles Times Jul. 6, 2026

Summerween in “Gravity Falls” was more or less the same as regular Halloween — “a night to celebrate pure evil,” as Grunkle Stan puts it gleefully — with trick-or-treating, carved jack-o-watermelons, and a Summerween superstore.

From Salon Jun. 30, 2026

The three of us in matching Halloween costumes the year we dressed as pieces of sushi.

From "Keep It Together, Keiko Carter" by Debbi Michiko Florence

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