The letters in SQUARE make 46 words of two letters or more. The longest is SQUARE at 6 letters, and the highest-scoring is SQUARE at 15 points.
No other single word uses all 6 letters of SQUARE. SQUARE has 6 letters: 3 vowels and 3 consonants, worth 15 points before any board bonuses.
6-letter words 1
5-letter words 5
aures5quare14urase5ureas5ursae5
4-letter words 14
ares4ears4eras4rase4rues4ruse4sear4sera4suer4sura4sure4urea4ursa4user4
3-letter words 18
aeq12are3ars3ear3eau3era3ers3qua12ras3res3rue3sae3sau3sea3ser3sue3suq12use3
2-letter words 8
ae2ar2as2er2es2re2rs2us2
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.