How many words can you make from ISTTW?

16 in the Tournament dictionary, ranging from 2 to 5 letters. That count covers words using some of the letters as well as all of them.

Is there a word that uses all of ISTTW?

Yes — 2 words use all 5 letters. They are in the 5-letter group at the top of the list.

TWIST, worth 8 points in Scrabble. Scores here count tile values only, with no board bonuses.

16 words can be made from these letters, the best being TWIST at 8 points.

Feed ISTTW to the solver and 16 words come back. They are set out below by length, with the highest scoring first inside each group.

From 2 letters to 5: the 3-letter band is the densest with 6 words, and the 5-letter band the scarcest with 2.

The highest-scoring answer is TWIST at 8 points in Scrabble. It tops both tables: 8 in Words With Friends as well.

At 5 letters, TWIST and TWITS are as long as this set goes.

Use the solver above to vary this rack: swap a letter, add a blank, or filter by what the word has to start with.

How many words can you make from ISTTW?: 16 in the Tournament dictionary, ranging from 2 to 5 letters. That count covers words using some of the letters as well as all of them.
Is there a word that uses all of ISTTW?: Yes — 2 words use all 5 letters. They are in the 5-letter group at the top of the list.
What is the highest-scoring word from ISTTW?: TWIST, worth 8 points in Scrabble. Scores here count tile values only, with no board bonuses.