longest english word with unque letters

[Skaperen]

what is the longest English word with all unique letters, that is, no duplicate letters. an example is "junkyard". "bar" fits the definition, too, but "junkyard" is longer. anything longer that? i know there is. so, what is the longest? a long word that does not fit the definition is "misinterpretations". there are a few duplicate letters in there, such as "i", "s", "n", "t", "e" and "r".

[ichabod801]

I get ambidextrously, but I suppose it depends on your dictionary.

[Skaperen]

we have winner!

[nilamo]

Using this: https://github.com/dwyl/english-words
I found cloth-measuring to be the biggest.

>>> biggest = ''
>>> with open('words.txt') as f:
...   for line in f:
...     if len(line) == len(set(line)):
...       if len(line) > len(biggest):
...         biggest = line
...
>>> biggest
'cloth-measuring\n'

Not sure if hyphenated words count, though.

[Yoriz]

What is the longest English word which doesn't repeat a letter?
There are two 15-letter words that meet this criterion: uncopyrightable, referring to something for which it is not possible to secure copyright, and dermatoglyphics, meaning 'the study of skin markings'.

[Skaperen]

Not sure if hyphenated words count, though.

they count if you want them to.

[ichabod801]

I say the max is 16: uncopyrightabled (having been made into something that cannot be copyrighted).

[Skaperen]

I say the max is 16: uncopyrightabled (having been made into something that cannot be copyrighted).

your vocabulary is definitely better than mine.

[Yoriz]

An isogram (also known as a "nonpattern word") is a logological term for a word or phrase without a repeating letter. It is also used by some people to mean a word or phrase in which each letter appears the same number of times, not necessarily just once. Conveniently, the word itself is an isogram in both senses of the word, making it autological.
....
....
Examples

17 letters

• subdermatoglyphic
  

16 letters

• uncopyrightables
  

15 letters

• dermatoglyphics
  
• hydropneumatics
  
• misconjugatedly
  
• uncopyrightable
  

....
....
More in link

[Skaperen]

i have used a 10 letter one since my days in college to obscure things like my CC numbers where i need to write them down.