The letters in SUPPORT make 90 words of two letters or more. The longest is SUPPORT at 7 letters, and the highest-scoring is SUPPORT at 11 points.
No other single word uses all 7 letters of SUPPORT. SUPPORT has 7 letters: 2 vowels and 5 consonants, worth 11 points before any board bonuses.
7-letter words 1
6-letter words 2
sprout8stupor8
5-letter words 17
ports7pours7pouts7props9prost7roups7roust5routs5sport7spout7spurt7stoup7stour5strop7torus5tours5turps7
4-letter words 34
opts6opus6orts4ours4oust4outs4pops8port6post6pots6pour6pout6prop8pros6pups8purs6puts6rots4roup6rout4rust4ruts4sort4soup6sour4spot6spur6stop6stor4tops6tors4tour4trop6tups6
3-letter words 25
ops5opt5ors3ort3our3out3pop7pot5pro5pup7pur5pus5put5rot3rut3sop5sot3sou3sup5top5tor3tup5upo5ups5uts3
2-letter words 11
op4or2os2ps4rs2so2to2ts2up4us2ut2
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.