The letters in SATISFY make 52 words of two letters or more. The longest is SATISFY at 7 letters, and the highest-scoring is SATISFY at 13 points.
No other single word uses all 7 letters of SATISFY. SATISFY has 7 letters: 2 vowels and 5 consonants, worth 13 points before any board bonuses.
7-letter words 1
5-letter words 7
fasts8fiats8fists8satis5sayst8sifts8stays8
4-letter words 13
aits4fast7fats7fays10fiat7fist7fits7sati4says7sift7sits4stay7tass4
3-letter words 17
aft6ais3ait3ays6fas6fat6fay9fit6ifs6its3sat3say6sis3sit3sty6tas3tis3
2-letter words 14
ai2as2at2ay5fa5if5is2it2si2ss2ta2ti2ts2ya5
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.