Wordplay · Ages 12–15
Riddle #143
I'm fifteen letters long and not one of my letters repeats — every single one is different. Fittingly, I describe a work that nobody can legally claim ownership of. What word am I?
You solved this one before
Answer: Uncopyrightable
U-N-C-O-P-Y-R-I-G-H-T-A-B-L-E: fifteen letters, fifteen different letters. A word with no repeated letter is called an isogram, and this is the longest one usually cited in English.