I lost the paperwork for this one.

The deal breaker for me was that there was an A at the 16th position, you can see it on the earlier post from before.  The problem with that is there is no isogram with 15 letters missing an A therefore you would have to find a 17+ letter word missing an A.  Probably one exists but it would probably be very long and why would anyone use a weirdo super long word when something 8-12 letters is good enough and easier to use and remember?

Feel free to go look for one but Hippopotomonstrosesquippedaliophobia is the closest I could get in both the literal and figurative sense.