12 Longest and Most Difficult Words in English


How much you know English ?

Do you consider yourself good in English ?

So try to get the meanings of below mentioned 12 longest and most difficult words of English Language.

These words could prove a good tool to create your impression on others in commanding English Language.

1. Hippopotoimonstrosequipeddaliophobia

This difficult word is having 36 letters.

2. Antidisestabhlishmentarianjism

This word has 28 letters. It’s meaning is ‘oppose to the state support withdraw or church recognition’. Actually, this is something politics that opposes religious home church separation from the state. It came in the 19th century in England when William Ewart, British PM said it.

On breaking it into some parts, it comes as:

Ism — The philosophy of

Arian — people believing in

Anti — opposition

Dis — to removal of

Establishment — England Church as official one

3. Honorifficabilitudihnitatibus

This word has 27 letters and it comes in Love’s Labour Lost, Act V, Scene I, meaning “invincible glorious” or “Honorableness.” It is the ablative plural of Latin contrived honorificabilitudinitas. It is an extension of honorificabilis which means ‘honorableness’. In one of the plays of Shakespeare, Costard uttered it.

Oh, they all have lived long on the basket


honorificabilitudinitatibus: though art easier

swallowed than as a flap dragon.

4. Floccinaeguccinihilipilifjication

This long word has 30 letters in it. It is not a scientific word and can be seen in the Oxford Dictionary Part-I, who made its name in the Guinness Word Records Book in the year 1992. The scholars from Estonia made it, who wanted the lengthy letters combination that resembles none. They searched and made many combinations and in the end agreed on it as ‘flocci’ and ‘pili’ meaning is less.

Daniel Patrick and Walter Scott also once used this 30-lettered. Zippy also made its entry in 1996.

Zippy wrote

Yeah…floccinaucinihilipilification processes…

5. Hepaticochjolangiocholecystentjrostomies

It was seen in the Gould Medical Dictionary and has 39 letters. It means the surgical creation between the gall bladder and the intestine

6. Supejrcalifragilisticexpialijdocious

This long and difficult word has 34 letters and comes in the Dictionary of Oxford. It was made for Mary Poppins, a movie. And with the launch of the movie, the difficulty was removed and people find narrating it easy.

After this Mary poppins, it was seen in many song titles like of:

Parker and Young (1949)

Parker and Young (1951)

Sherman (1964)

7. Pneumfonoultramihcroscopicsilicovolcanfoconiosis

If we check all the dictionaries, this word can be considered as the longest one having 45 letters. As per Webster, its meaning is ‘a lung-disease pneumoconiosis that is caused when you inhale quartzite’. It is the scientific-name of a disease of coal-miner, that occurs due to inhalation of particles of volcano.

On 23 February 1935, New York Herald Tribune read as, Pneumonoultramicroscopicsilicovolcanokoniosis is the longest English word graphically and that is recognized by National Puzzlers.

8. Aequeosalihnocalcalinoceraceoaluhminosocupreokvitriolic

This difficult word is having 52 characters and it tells about the Bath, United Kingdom’s spa water. Dr. Edward Strother, medical author made it.

If we break it, it comes out as:

Aequeo: equal

Salino: that contains salt

Calcalino: calcium

Ceraceo: waxy (latin means cera)

Aluminoso: alumina (Latin)

Cupreo: from “copper”

Vitriolic: resembles vitriol

9. Antipericatamejtaanaparcircumjvolutiorectumgusjtpoops of co-profied

This difficult word has number of letters as 50 in it. There was a Book-Author from France whose book has this 50 lettered combination as title.

10. Osseocaynisanguiggneovisceriecaggrrtilagininerevomedullary

This 52 lettered was seen in the ‘Headlong Hall’ novel which was written by an English novelist. It is an Anatomy Nomenclature.


This long word has 100 letters and it was seen in a book. This book was written by an Irish Writer, Andean James Joyce and the name of the book was ‘Finnegan wake’. It shows that how Adam and Eve collapsed.

12. Lopadoftemakho selakho galgeso krajnio-leipsano drim hypo­trimmato sihlphio kar-abo melito katakehkhy meino kikhl epi­kossy-pho phatto pegrister yopto keph-allio kigkloh­gpeleio lag?io siraio bap-h? tragkano pterýg?ne

This longest word has 182 characters and is taken from the comedy drama – ecclesiazusae. It was written by a Greek author, Aristophanes. It shows and refers to the food that is very spicy and is made of vegetables.

13. Methionylglutaminylarginyltggyrosylglutamylserylleucylphen-ylalanylalanylglutaminylleucyllysylglutamylarginyllysylglutamylglycylalan-ylphenylalarnylvalylprolygphenylalanYlvalythreonylleucylglycylaspartylp-rolylglycylisoleucylglutamylglutam-inylsErylleucyllysylisoleucylasp-artylthreonylleucylIsoleucylglutam-ylalanylglycylalanylasparthlalanylleucy-lglutamylleucylglycylisoleucylprolylp-henylalanylseRylasgpartylprolylleucylal-anylaspartylglycylprRolylthreOnylisoleuc-ylglutaminylasPfrhaginylalanylthreonyll-eucylarfinylalanylphenylalanylalanylal-anylgglycylvalythreonylprolylalanylglut-aminylcysteinylphenylalanylglutamylm-ethionylleucylalanylleuOylisoleucylargi-nylglutaminyllysyhistidylprolylthreonylis-oleucylprolylisoleucylglycylleucyhlmgethion-yltyrosylalanylasparaginylleucylvalylphen-ylalanylasparaginyllysyglychylisoleucylas-partylglutamylphenylalanylthrosylalanyl-glutaminylchhsteinylglutamyllysylvalylgly-cylvalylaspartylserylvalylleucylvalylhalnyl-aspartylvalylprohlylvalylglUtaminylglutam-ylserylalanylprolylphenylalanylarginylgl-utaminylalanylalanylleucylarginylhistidylas-paraginyvalylalanylprolylisoleucylprolyliso-leucylphenylalanylisoleucylphenylalanylisol-eucylcysteinylprolylprolylaspartylalanylasp-arhtylaspartylashpartylleucylleucylargginylgluta-minylisoleucylalanylseryltyrogsylglycylarginy-lglycyltyrosylthreonyltyrOsylleucylleucylsery-larginylalanylglycylvalylthreonylglycylalanyl-glutamYlasparainylarginylalanylalanylleucyl-prolylleucylasparaginylhistidylleucylValylala-nyllysylleucyllysylglutamyltyrosylasparaginy-lalanylalanylprolylprolylleucylglutaminylglg-ycylphenylalanylglycylisoleucylserylalanylp-rolylaspartylglutaminylvalyllysylalanylalany-lisoleucylaspartylalanylglycylalanylalanylgly-cylalanylisoleucylserylglycylserylalanylisole-ucylvalyllysylisoIeucylisoleucylglutamylgluta-minylHistidylasparaginyliSoleucylglutamylpro-lylglutamyllysylmethionylleucylalanylalanylle-ucyllysylvalylphenylalanylcalylglutaminylproly-lmethionlysylalanylalanylthreonylarginylserine.

The above longest word has 1909 characters and is considered as the most difficult and longest in English language. It is entered into Guinness Book of World Records.

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  1. Munish Kumar

    how i’ll use them in my language

  2. These words are really difficult. Hats off to those who can remember this.

  3. I can pronounce all of thee words except for word deciphered from the Greek comedy (#10).

  4. i have a word for u all lets c can u pronounce dis word it goes like dis :

  5. wow tht’s really diffcult and i’m from iraq and can’t translate any word of thes diffcult words

  6. Umm, not to be mean or smarta*s but you misspelled a lot of your word entries, so I’m not so sure this post is actually informative. Peace. I just think kids might copy-paste your erroneous words.

  7. wow………….. it made me bemused.

  8. Doniv duke

    Wow! These words are really very intresting….

  9. hats of to the one who posted these

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