What is the longest word in the English language that contains no duplicate letters?
The longest common words in the English language (no duplicate letters) are uncopyrightable, hydropneumatics, misconjugatedly or dermatoglyphics. Dmitri Borgmann tries to find the longest isogrammic word. The longest one he found was “Dermatoglyphics” at 15 letters. He coins several longer hypothetical words, such as “thumbscrew-japingly” (18 letters, defined as “as if mocking a thumbscrew”) and, with the “uttermost limit in the way of verbal creativeness”, “pubvexingfjord-schmaltzy” (23 letters, defined as “as if in the manner of the extreme sentimentalism generated in some individuals by the sight of a majestic fjord, which sentimentalism is annoying to the clientele of an English inn”). In the book Making the Alphabet Dance, Ross Eckler reports the word “subdermatoglyphic” (17 letters) can be found in Lowell Goldmith’s article Chaos: To See a World in a Grain of Sand and a Heaven in a Wild Flower. He also found the name “Melvin Schwarzkopf” (17 letters), a man living in Alton, Illin
