What are some six letter words with 1st letter D and 2nd letter U and 4th letter F and 6th letter L?

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 Words with the pattern DU-F-L. That is, six letter Words with 1st letter D and 2nd letter U and 4th letter F and 6th letter L. In alphabetical order, they are:

dueful

duffel