What It Scores
HUMMUM is a valid word in the tournament list this site uses. Tile values only, before any premium square: 15 in Scrabble and 17 in Words With Friends. The letters break down as H4 U1 M3 M3 U1 M3.
Words Made From The Letters In HUMMUM
12 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.
4 letter words (2)
3 letter words (5)
2 letter words (5)
Next: the Word Unscrambler for any letters at all. Full entry and definition at Merriam-Webster.