How many words can you make from EIOPRRSU?

167 in the Tournament dictionary, ranging from 2 to 8 letters. That count covers words using some of the letters as well as all of them.

Is there a word that uses all of EIOPRRSU?

Yes — 1 word uses all 8 letters. They are in the 8-letter group at the top of the list.

SUPERIOR, worth 10 points in Scrabble. Scores here count tile values only, with no board bonuses.

167 words can be made from these letters, the best being SUPERIOR at 10 points.

The letters EIOPRRSU spell 167 different words. They are listed below longest first, because the long ones are usually what you are hunting for.

Most of the answers cluster at 4 letters, where there are 49. Only 1 reach the full 8.

SUPERIOR at 10 points is the best Scrabble score available here. It tops both tables: 12 in Words With Friends as well.

SUPERIOR reaches 8 letters — the ceiling for this query.

If you are looking for a specific answer, the filters on the solver above take a prefix, a suffix or an exact length.

superior: having a higher rank
poseur: a person who habitually pretends to be something he is not
purser: an officer aboard a ship who keeps accounts and attends to the passengers' welfare
uprise: move upward
rouser: someone who rouses others from sleep

How many words can you make from EIOPRRSU?: 167 in the Tournament dictionary, ranging from 2 to 8 letters. That count covers words using some of the letters as well as all of them.
Is there a word that uses all of EIOPRRSU?: Yes — 1 word uses all 8 letters. They are in the 8-letter group at the top of the list.
What is the highest-scoring word from EIOPRRSU?: SUPERIOR, worth 10 points in Scrabble. Scores here count tile values only, with no board bonuses.