Smallest Alphabest

I was able to find the smallest heterogram scrabble puzzle.

http://www.gamepuzzles.com/alphabest.htm

Thanks to grep & sowpods :

$ grep -P '^\w{14}$' sowpods.txt | grep -v -i -P '(.).*\1'
AMBIDEXTROUSLY
DERMATOGLYPHIC
HYDROMAGNETICS
HYDROPNEUMATIC
TROUBLEMAKINGS
UNDISCOVERABLY