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The eleventh longest word in English is pseudopseudohypoparathyroidism (30 letters), this is the longest non-coined word in a major dictionary and it means an inherited disorder that is caused by a mutation in the Gs alpha subunit gene imprinted on the paternal chromosome.

We can find a definition of pseudopseudohypoparathyroidism in this i a disorder characterized by short stature, round face, short neck, and shortening of metacarpal bones with normal blood chemistry values and normal renal response to parathyroid hormone. In addition, the parathyroid glands are intrinsically normal, and parathyroid hormone levels are also normal. These patients, although they have the same phenotype as those with pseudohypoparathyroidism, have true hypoparathyroidism.


About the figure above: X-rays demonstrate congenital shortening of the third, fourth and fifth metacarpals on the right hand. This patient was a 40-year-old female with normal serum calcium, phosphorus and alkaline phosphatase. Her findings are consistent with pseudopseudohypoparathyroidism (from

Sorry for all chemical and medical terms but that’s the nature of this word.

Longest Words in English Top 14:



  1. And all this time I thought it was supercalifragilisticexpialidocious. I’m crushed.

  2. lol get a life you dumb fuck every knows the longest word is chcikenpieatthesupermarketwhenhediesinabin

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