What is the longest known word?
151768
These are the top five. If you go to the site below it will\ngive you an explaination of the first one. When you scroll down you should see another list containing the next four words.\n\n*Floccinaucinihilipilification\n*Hippopotomonstrosesquippedaliophobia \n*Antidisestablishmentarianism \n*Supercalifragilisticexpialidocious \n*Pneumonoultramicroscopicsilicovolcanoconiosis
992749
"smiles" is the longest word because there is a mile between the first letter and the last. :)
205889
pneumonoultramicroscopi-\ncsilicovolcanoconiosis\n\nA lung disease caused by inhaling silica.  Longest word in common usage in English.
581440
The CORRECT spelling for the longest word currently in the English language is:\n\nPneumonoultramiscroscopic\nsilicovolcanoconiosis\n\n46 letters long.  It is an inflammatory lung disease caused by the inhalation of fine silica dust.
67777
There is no "Human Dictionary". \n\nHowever, the longest REAL word in the English language, according to The Guinness Book of Records, is "floccinaucinihilipilification" (29 letters) -  "the act of estimating (something) as worthless".\n\nThis doesn't count made-up words such as "pneumonoultramicroscopicsilicovolcanoconiosis", or "Bababadalgharaghtakamminarronnkonnbronntonnerronntuonnthunntrovarrhounawnskawntoohoohoordenenthurnuk," which only appears in James Joyce's novel, Finnegans Wake.\n\nSome very long names of places can be found at http://llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch.com/\n\np.s. Those long words above are abbreviated, not my fault.  Seems that Yahoo! Answers doesn't like long words.  Anyway, see the source below if you want to see the whole word(s).
1178427
The longest word in any major English language dictionary is Pneu mono ultra micro scopic silico volcano coniosis, a 45-letter word supposed to refer to a lung disease, but research has discovered that this word was originally intended as a hoax. It has since been used in a close approximation of its originally intended context, lending at least some degree of validity to its claim. See the separate article for details.\n\nThe Guinness Book of Records, in its 1992 and subsequent editions, declared the "longest real word" in the English language to be floccinaucinihilipilification at 29 letters. Defined as "the act of estimating (something) as worthless", its usage has been recorded as far back as 1741. In recent times its usage has been recorded in the proceedings of the United States Senate by Senator Robert Byrd [1], and at the White House by Bill Clinton's press secretary Mike McCurry, albeit sarcastically. It is the longest non-technical word in the first edition of the Oxford English Dictionary.\n\nAntidisestablishmentarianism (a 19th century movement in England opposed to the separation of church and state) at 28 letters is one of English's longest words.\n\nThe longest word which appears in William Shakespeare's works is the 27-letter honorificabilitudinitatibus, appearing in Love's Labour's Lost. This is arguably an English word (rather than Latin), but only because he used it.\n\nThe humuhumu-nukunuku-a-pua‘a, or reef triggerfish, is Hawaii's official state fish [1]. At 21 letters (22 counting the okina) it is one of the best known very long one-word names for an animal. It is often asserted that "the name is longer than the fish."\n\nAlthough only fourteen letters long, sesquipedalian deserves a mention. It is derived from a nonce word used by the Roman author Horace, in his work Ars Poetica (The Art of Poetry). The quote is as follows: "Proicit ampullas et sesquipedalia verba," which means, "He throws aside his paint pots and his words that are a foot and a half long". The Oxford English dictionary[2] lists sesquipedalianism ("the practice of using words one and a half feet long"), and further derivations can be created as described in the Constructions section below.\n\n[edit]\nCoinages\nIn his play Assemblywomen, the ancient Greek comedic poet Aristophanes created a word of 183 letters describing a dish by stringing together its ingredients.\n\nJames Joyce, known for his distinctive style, made up nine 100- and one 101-letter long words in his novel Finnegans Wake, the most famous of which is Bababadal­gharagh­takammin­arronn­konn­bronn­tonn­erronn­tuonn­thunn­trovarrhoun­awnskawn­toohoo­hoordenen­thurnuk. Appearing on the first page, it allegedly is the symbolic thunderclap representing the fall of Adam and Eve. As this word appears nowhere else except in reference to this passage, it is generally not accepted as a real word. Sylvia Plath made mention to that word in her semi-autobiographical novel The Bell Jar as Esther Greenwood, the protagonist, was reading Finnegans Wake.\n\nThe well-known song title from the movie Mary Poppins, "Supercalifragilisticexpialidocious", with 34 letters, does appear in several dictionaries, but only as a proper noun, and defined in reference to the song title. Hence it may well be dismissed as not a real word, particularly since the song assigns no meaning to it other than to say it's impressive.\n\nIn the 1970s, there were advertisements for Lip­smackin­thirst­quenchin­acetastin­motivatin­good­buzzin­cool­talkin­high­walkin­fast­livin­ever­givin­cool­fizzin Pepsi, coining a 100-letter term. In 1975, the 71-letter Twoallbeefpattiesspecialsaucelettucecheesepicklesonionsonasesameseedbun was used in a McDonald's Restaurant advertisement to describe the Big Mac. [3]\n\n\n\nHenry Carey's farce Chrononhotonthologos (1743) holds the opening line: &quo
27055
No. it is not. The well-known song title from the movie Mary Poppins, Supercalifragilisticexpialidocious, with 34 letters, does appear in several dictionaries, but only as a proper noun, and defined in reference to the song title. Hence it may well be dismissed as not a "real" word.\n\n\nThe Guinness Book of Records, in its 1992 and subsequent editions, declared the "longest real word" in the English language to be floccinaucinihilipilification at 29 letters. Defined as the act of estimating as worthless, its usage has been recorded as far back as 1741. In recent times its usage has been recorded in the proceedings of the United States Senate by Senator Jesse Helms, and at the White House by Bill Clinton's press secretary Mike McCurry. It is the longest non-technical word in the first edition of the Oxford English Dictionary.\n\n\nHowever, There are seemingly endless debates over what is the longest word in English, demonstrating that the idea of what constitutes a word is not as straightforward as it seems. Hyphenated or space-delimited compounds and proper nouns are linguistically considered words, but as they can grow with few limits, they are not counted.\n\nAntidisestablishmentarianism (a 19th century movement in England opposed to the separation of church and state) at 28 letters is often popularly accepted as English's longest word, and is probably the best-known "longest word." Other versions such as Antidisestablishmentarianistically and Pseudoantidisestablishmentarianism are demonstrably longer, though, showing that 'popular acceptance' is not a guarantee of accuracy. (See also the "Constructions" section below.) "Antidisestablishmentarianism" is actually used seriously in academic and ecclesiastical writing about the Church of England when the concept arises, and although one may suspect that authors have gone out of their way not to avoid it, it does thus have a serious claim to be the longest real word in current English.\n\nThe word pneumonoultramicroscopicsilicovolcanoconiosis, also spelled pneumonoultramicroscopicsilicovolcanokoniosis, is defined as "a lung disease caused by the inhalation of very fine silica or quartz dust." At 45 letters, it is certainly the longest word ever to appear in a non-technical dictionary of English, the Oxford English Dictionary. However there are strong indications that the word was coined by puzzler Everett Smith in 1935 as a hypothetical long word that could result from the protraction of medical terms. The actual name of the disease is pneumoconiosis, which is 14 letters long.\n\n\n\nA popular joke answer to the 'longest word' question is the word smiles, credited as the longest word because there is a mile between each s. Of course, by this reckoning the word beleaguered, which contains a league, is even longer.\n\nAccording to some, the longest word is the word after the sentence "And now, a word from our sponsors".\n\nAlthough only fourteen letters long, sesquipedalian deserves a mention. It is derived from a nonce word used by the Roman author Horace, in his work "Ars Poetica" (The Art of Poetry). The quote is as follows: "Proicit ampullas et sesquipedalia verba," which means, "He throws aside his paint pots and his words that are a foot and a half long". The Oxford English dictionary lists sesquipedalianism ("the practice of using words one and a half feet long"), and further derivations can be created as described in the "Constructions" section above.
418373
Stewardesses; \n\nI believe this is the longest word which can be typed with one hand (left) when typing in the correct manner.
325266
forgotten words, old words, non-known words, old-fashioned, unknown, non-known-internet word, inexistend, net-inexistend\n\nbest: web-inexistend / future-words\n\nfor answers of impossible: "wedfajksgkvhfdsvbfdahbjadfb" find this word before date of this answer with pre- and post space, not as part of a char-stream/word. (I don't know the language and meaning, but you never know who's word of language was, is or will be.)
497806
PNEUMONO­ULTRA­MICRO­SCOPIC­SILICO­VOLCANO­CONIOSIS (also spelled PNEUMONO­ULTRA­MICRO­SCOPIC­SILICO­VOLCANO­KONIOSIS) = a lung disease caused by breathing in particles of siliceous volcanic dust.\nThis is the longest word in any English dictionary. However, it was coined by Everett Smith, the President of The National Puzzlers' League, in 1935 purely for the purpose of inventing a new "longest word". The Oxford English Dictionary described the word as factitious. Nevertheless it also appears in the Webster's, Random House, and Chambers dictionaries.
923434
i feel the longest word is SMILES because there is a mile between two 's'.  lol
355483
STRENGHTS...Longest word with one vowel only
7518
Longest non technical word is \n\nfloccinaucinihilipilification\n\nLongest technical word is \n"pneumonoultramicroscopic- \nsilicovolcanoconiosis" \n\n(it is the name of a lung disease caused by inhaling fine mineral dust)\n\nIt is a common misconception that "Antidisestablishmentarianism" \nis the longest word.\n\nI had to hyphenate the technical word because yahoo was truncating it for some reason. It is not hyphenated in its correct spelling.
620427
Floccinaucinihilipilification (29 letters), is famous for being the longest word in the Oxford English Dictionary, however, this is now only true of the first edition, the second edition contains a few even-longer words. The word itself was a joke word of the 18th and 19th century literati, stemming from an Eton grammar school Latin drill. \n\ndefinition: an estimation of something as worthless.
1166403
The Oxford English Dictionary says 'Scraunched'\n\nalthough there are debates about it here:\n\nhttp://en.wikipedia.org/wiki/List_of_the_longest_English_words_with_one_syllable
1045114
The longest word that I could find having only 4 letters is serenenesses - 12 letters long using only S,E,R,N
25320
According to oxford\nThe longest word cited by the Guinness Book of Records, which allegedly represents the name for human mitochondrial DNA, is 207,000+ letters long.\n\nThe formal names of chemical compounds are almost unlimited in length (for example, aminoheptafluorocyclotetraphosphonitrile, 40 letters\n\nwords (mainly technical ones) recorded in the complete Oxford English Dictionary include: \n\notorhinolaryngological (22 letters), \nimmunoelectrophoretically (25 letters), \npsychophysicotherapeutics (25 letters), \nthyroparathyroidectomized (25 letters), \npneumoencephalographically (26 letters), \nradioimmunoelectrophoresis (26 letters), \npsychoneuroendocrinological (27 letters) \nhepaticocholangiogastrostomy (28 letters), \nspectrophotofluorometrically (28 letters), \npseudopseudohypoparathyroidism (30 letters). \n\nAccording to Guinness Book of Records,\nOfficial longest word is 29 letters \nfloccinaucinihilipilification (FLOK-sih-noh-see-NEE-hee-lee-PEE-lih-fih-KAY-shun\n\nAccording to werriam websters dictionary \npneumonoultramicro-scopicsilicovolcanoconiosis, which has 45 letters \n\n\nPLEASE CHECK THE LINKS FOR INTRESTING DETAILS