The letters in ASSURES make 58 words of two letters or more. The longest is ASSURES at 7 letters, and the highest-scoring is ASSURES at 7 points.
No other single word uses all 7 letters of ASSURES. ASSURES has 7 letters: 3 vowels and 4 consonants, worth 7 points before any board bonuses.
7-letter words 1
6-letter words 2
assure6urases6
5-letter words 10
aures5rases5ruses5sears5suers5suras5urase5ureas5ursae5users5
4-letter words 20
ares4ears4eras4rase4rues4ruse4sass4sear4seas4sera4sers4suer4sues4sura4sure4suss4urea4ursa4user4uses4
3-letter words 16
are3ars3ear3eau3era3ers3ess3ras3res3rue3sae3sau3sea3ser3sue3use3
2-letter words 9
ae2ar2as2er2es2re2rs2ss2us2
Words are from our open word list and include some game-only words. Rude words are left out of this page; the unscrambler shows every valid word, lets you add blank tiles and filter by length.