10 Longest Words in the English Language

Speaking English allows you to actually broaden your world, from job opportunities to the ability to relate to people from every country.

Knowing the language makes it much more interesting every trip.

With over 1,130 million native speakers, English is the most spoken language in the world.

It’s also the official language of the sky – all pilots have to speak and identify themselves in English.

Not only is Shakespeare widely considered as one of the greatest dramatists of all time, but over his lifespan he added an incredible amount of about 1,700 words to the English language by changing nouns into verbs, verbs into nouns, connecting some words with each other and adding prefixes or suffixes to others.

10 Longest Words in the English Language

How many words exactly are in the English language?

Many of the longest words in the dictionary refer to medicine or chemistry.

10. Incomprehensibilities (21 letters)

Impossible to comprehend. In the 1990’s, incomprehensibilities set the record as the longest word “in common usage.”

9. Dichlorodifluoromethane (23 letters)

Definition: A chlorofluoromethane CF2Cl2.

8. Thyroparathyroidectomized (25 letters)

Definition: A medical term that defines the excision of both the thyroid and parathyroid glands.

7. Honorificabilitudinitatibus (27 letters)

Definition: The state of being able to achieve honours. Longest word in  Shakespeare's works; longest word in the English language featuring alternating consonants and vowels(Latin)

6. Antidisestablishmentarianism (28 letters)

Definition: The political position of opposing  disestablishment. Longest non-contrived and nontechnical word.Not all dictionaries accept it due to lack of usage.

5. Floccinaucinihilipilification (29 letters)

Definition: The act of regarding something as unimportant. Longest unchallenged nontechnical word.

4. Pseudopseudohypoparathyroidism (30 letters)

Definition: The act of regarding something as unimportant. Longest unchallenged nontechnical word.

3. Supercalifragilisticexpialidocious (34 letters)

Definition: A medical disorder.Longest non-contrived word in a major dictionary.

2. Hippopotomonstrosesquippedaliophobia (36 letters)

Definition: Unclear in source work, has been cited as a nonsense word.

Made popular in the Mary Poppins film and musical.

1. Pneumonoultramicroscopicsilicovolcanoconiosis (45 letters)

Definition: The disease silicosis 

Longest word in a major. dictionary.Technical; contrived coinage to make it the longest word.

LONGEST ENGLISH WORD:
Methionylthreonylthreonylglutaminylarginyl…isoleucine (189,819 letters)

Definition: If we’re talking chemistry, the longest chemical name is 189,819 letters long. 

Chemical name of titin, the largest known protein.Technical; not in dictionary; whether this is a word is disputed