lies (that is the best i've got)
vetoed, teed, voted, vet, date, debt,
valid
organdie - a type of muslin
hairdo
D N T S Y _ _ = DENSITY or DESTINY (add E and I)
In English the largest word you can make is woaded, which uses six of the seven letters. There are no valid seven-letter combinations from the pattern a d d e h o w.
it could be spade
Daydream.
centrifuge
hared, heard
Sized
Divots