"Randomize" doesn't have repeated letters, either.

From: Ted Eisenstein <[log in to unmask]>
To: [log in to unmask]
Sent: Wednesday, March 5, 2014 9:48 PM
Subject: Re: [CALONTIR] OT: Word help needed, please

>I figure the people who post here are fairly intelligent so I’m hoping someone can help me. I need a
>nine letter word with none of the letters duplicating themselves. Every word I’ve thought of has had a
>duplicate letter somewhere within the word. The most blatant have been two ‘e’s or two ‘s’s, but ‘r’s
>are rather prevalent as well. Please help!

"Duplicate" doesn't have any repeated letters.