This is the longest English word that I know.
I learned it from a teacher when I was a junior high school student.
I thought, "How can you remember the spelling of the word? You are a genius!"
Much later on, I found it is actually composed of several parts:
It's a lot of fun to introduce this word to students in class. They say, "What's that? Is it a sentence?"
Anyway, do you know any longer words than this?
Well Wikipedia also says that your word is the longest in english dictionary, one more I would like to add is "Pseudopseudohypoparathyroidism". May be not longer than yours but that's what I found.....
Another one mentioned when talking about long words, and one that is a single word in English rather than lots of bits stuck together is Floccinaucinihilipilification
But that one is a joking reference to a group of Latin words that behaved the same way grammatically or semantically (not sure which ). Schoolboys (there was no such thing as a schoolgirl at the time) had a mnemonic jingle that started 'Flocci, nauci, [pauci...] nihili, and pili...', and although many dictionaries still list it I don't imagine anyone uses it, except as a joke. (There are aren't that many contexts that call for a word that means 'The art or habit of estimating as worthless'! )
I don't mean to sound churlish, but these threads always start to annoy me. There are all sorts of scientific names for proteins or viruses that just go on and on and ON, but those are hardly English words. So take this as a warning to anyone who is tempted to paste in one of those four-line "words" - I'll delete it. Words that actually have meanings instead of naming proteins strung together only, please.
Besides, everyone knows that "smiles" is the longest word in English. Can you figure out why?
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.
Because there's a ...
No, I don't want to spoil it for somebody else.