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The Longest Words in the Dictionary

Word List with 7 words
By Dictionary.com

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Words in This List

antidisestablishmentarianism

opposition to the withdrawal of state support or recognition from an established church, esp. the Anglican Church in 19th-century England.

cyclotrimethylenetrinitramine

a white, crystalline, water-insoluble, powerful high explosive, C3H6N6O6, used chiefly in bombs and shells.

dichlorodiphenyltrichloroethane

a white, crystalline, water-insoluble solid, C14H9Cl5, usually derived from chloral by reaction with chlorobenzene in the presence of fuming sulfuric acid: used as an insecticide and as a scabicide and pediculicide: agricultural use prohibited in the U.S.

floccinaucinihilipilification

the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).

pneumonoultramicroscopicsilicovolcanoconiosis

an obscure term ostensibly referring to a lung disease caused by silica dust, sometimes cited as one of the longest words in the English language.

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sesquipedalianism

given to using long words.

supercalifragilisticexpialidocious

(used as a nonsense word by children to express approval or to represent the longest word in English.)