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Longest Word In English With Each Letter Twice

"Unprosperousness", at 16 letters long, is the longest word in the English language in which each letter occurs at least twice. In the word "Sestettes", a musical term meaning pieces of music for six voices, each letter appears three times.

set (58 ; 126 ; 10 , ).

Longest Palindrome

The longest known palindrome - a word that reads the same backwards or forwards - in any language is the 19-letter word saippuakivikauppias, which is Finnish for "a dealer in lye", meaning a seller of soap stone.

mamihlapinatapai , . " , , , ".

Longest Monosyllabic English Words

"Scraunched", meaning to crush or crush noisily, and the archaic word "strengthed", each 10 letters long, are the longest English words that are only one syllable long. There are more 9-letter words: "scratched", "screeched", "scrounged", "squelched", "straights", and "strengths".