The letters in SOLVING make 71 words of two letters or more. The longest is SOLVING at 7 letters, and the highest-scoring is SOLVING at 11 points.
No other single word uses all 7 letters of SOLVING. SOLVING has 7 letters: 2 vowels and 5 consonants, worth 11 points before any board bonuses.
7-letter words 1
6-letter words 5
5-letter words 11
lingo6lings6linos5lions5login6loins5longs6noils5sling6vinos8viols8
4-letter words 24
gins5ions4ling5lino4lins4lion4logs5loin4long5nils4nogs5noil4oils4sign5silo4sing5slog5snog5soil4soli4song5vigs8vino7viol7
3-letter words 16
gin4ins3ion3lin3lis3log4nil3nog4nos3oil3ons3sin3sol3son3vig7vis6
2-letter words 14
go3gs3in2is2li2ln2lo2ls2no2oi2on2os2si2so2
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.