There are a few reasons why this discrepancy exists:
* Common Misconception: It's a common misconception that "antidisestablishmentarianism" is the longest word. It's very long, but it's not the longest.
* Technical Definitions: "Longest" can be defined in different ways. Some dictionaries might include proper nouns (like names), scientific terms, or even technical terms.
* Emphasis on Difficulty: "Antidisestablishmentarianism" is a challenging word to spell and pronounce, so its memorability might contribute to the misconception.
So, technically, "antidisestablishmentarianists" is the longer word!