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The hardest words to spell in the English language

Published on 31 January 2024
Edited on 08 April 2024

The hardest words to spell in English

Want to challenge yourself? Here is a list of 30 of the hardest to spell words in the English language. Even pronouncing them is really difficult!

Pneumonoultramicroscopicsilicovolcanoconiosis - A lung disease caused by inhaling very fine ash and sand dust.

Floccinaucinihilipilification - The act of estimating something as worthless.

Antidisestablishmentarianism - Opposition to the disestablishment of a church, especially the Anglican Church in 19th-century England.

Hippopotomonstrosesquippedaliophobia - Ironically, the fear of long words.

Supercalifragilisticexpialidocious - A word made popular by the Mary Poppins film, meaning fantastic or wonderful.

Pseudopseudohypoparathyroidism - A rare inherited disorder.

Thaumaturgy - The capability of a magician or a saint to work magic or miracles.

Triskaidekaphobia - Fear of the number thirteen.

Otorhinolaryngologist - A physician specialized in diseases of the ear, nose, and throat.

Chrononhotonthologos - The title character in a satirical play from the 18th century.

Pseudomyxoma - A rare tumor characterized by mucinous material in the abdomen.

Dichlorodifluoromethane - A type of hydrochlorofluorocarbon.

Incomprehensibilities - Things that are impossible to comprehend.

Hexakosioihexekontahexaphobia - Fear of the number 666.

Honorificabilitudinitatibus - The state of being able to achieve honors.

Tintinnabulation - The ringing or sounding of bells.

Euouae - A medieval musical term.

Phthalocyanine - A chemical compound used in dyes.

Gubernatorial - Relating to a governor.

Sphygmomanometer - An instrument for measuring blood pressure.

Quinquagesima - The Sunday before Lent.

Chiaroscurist - An artist who specializes in chiaroscuro.

Prospicience - Foresight or foreknowledge.

Borborygmus - The sound of a rumbling stomach.

Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch - A town in Wales.

Naphazoline - A decongestant.

Zygomatic - Pertaining to the cheekbone.

Methylchloroisothiazolinone - A chemical used in cosmetics.

Schizosaccharomycetes - A genus of fungi.

Kakorrhaphiophobia - Fear of failure or defeat.

Think twice before including them into one of your spelling tests!