Some seven letter words that can be made with those letters are:
The following five letter words can be made:GoutyPouty
Five letter words that can be created using the letters r r s h p o u a include:PurrsPoursSharpRoarsHarpsHours
Librarian is a 9 letter word that has letters BRAIN in it.
Using all the letters you get: saguaro
There is no seven-letter word in the English language using those letters.
myrtles
The following five letter words can be made:GoutyPouty
Parliamentary
lung distance
Being. Began
There are no American English words that meet that criteria. (You can make the four-letter word edit.)
Breeder is a 7 letter words using only those letters
Six letter words using the letters 'nuspiegn' are ensign, supine, and genius.
Using all 7 letters you get rewords
You can not spell any 4 letter words with the 3RD letter N using only the letters pmhlijkssxt. The letters do not include the letter N.
forfeit
Five letter words that can be created using the letters r r s h p o u a include:PurrsPoursSharpRoarsHarpsHours