FIVE LONGEST ENGLISH WORDS

If you want to sound smart and impress others, use big words. And we have some really big words -- the longest in the English language with one exception. The longest English word is the chemical name for the titin protein found in humans and is a stunning 189,819 letters. The five longest words in the English language, as compiled by Grammarly.com:

1. Pneumonoultramicroscopicsilicovolcanoconiosis
Length: 45 letters
Meaning: A lung disease caused by the inhalation of silica or quartz dust.

2. Pseudopseudohypoparathyroidism
Length: 30 letters
Meaning: A mild form of inherited pseudohypoparathyroidism that simulates the symptoms of the disorder but isn't associated with abnormal levels of calcium and phosphorus in the blood.

3. Floccinaucinihilipilification
Length: 29 letters
Meaning: The estimation of something as valueless. Ironically, floccinaucinihilipilification is a pretty valueless word itself; it's almost never used except as an example of a long word.

4. Antidisestablishmentarianism
Length: 28 letters
Meaning: Originally described as opposition to the disestablishment of the Church of England, it now refers to any opposition to withdrawing government support of a particular church or religion.

5. Incomprehensibilities
Length: 21 letters
Meaning: The quality of being incomprehensible. It set the record in the 1990s as the longest word "in common usage."