According to SOWPODS (the combination of Scrabble dictionaries
used around the world) there are 30 words with the pattern
-R-T-N---. That is, nine letter words with 2nd letter R and 4th
letter T and 6th letter N. In alphabetical order, they are:
arytenoid
britannia
bruteness
cretinise
cretinism
cretinize
cretinoid
cretinous
cretonnes
crotonbug
gratinate
gratineed
gratinees
gratingly
irateness
pratingly
pretences
pretended
pretender
pretenses
protandry
protanope
protended
protenses
protonate
protonema
prytaneum
tretinoin
triteness
tritonias