What It Scores
MIASMAS is a valid word in the tournament list this site uses. Tile values only, before any premium square: 11 in Scrabble and 11 in Words With Friends. The letters break down as M3 I1 A1 S1 M3 A1 S1.
At seven letters this plays a whole rack, which is a bingo and worth 61 in Scrabble once the 50 point bonus lands.
Words Made From The Letters In MIASMAS
63 shorter words come out of these tiles. On a board that matters more than the long play, because a short word on a premium square often beats a long one on plain squares.
6 letter words (2)
5 letter words (15)
4 letter words (20)
3 letter words (17)
2 letter words (9)
Next: the Word Unscrambler for any letters at all. Full entry and definition at Merriam-Webster.