The word, 'astonishing' uses all of the given letters.
shouting
Breeder is a 7 letter words using only those letters
There are three 7-letter words possible:roosterrooterstoreros
snowday
sultana
jetsam
There is no 9 letter word, 4th letter r that can be made from those letters.
hipster
estuary
pluvial
Beanbag
alpaca
RANGE