What It Scores
MOMMY is a valid word in the tournament list this site uses. Tile values only, before any premium square: 14 in Scrabble and 14 in Words With Friends. The letters break down as M3 O1 M3 M3 Y4.
Words Made From The Letters In MOMMY
9 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.
3 letter words (3)
2 letter words (6)
Next: the Word Unscrambler for any letters at all. Full entry and definition at Merriam-Webster.