What It Scores
SIZY is a valid word in the tournament list this site uses. Tile values only, before any premium square: 16 in Scrabble and 16 in Words With Friends. The letters break down as S1 I1 Z10 Y4.
Words Made From The Letters In SIZY
2 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.
2 letter words (2)
Next: the Word Unscrambler for any letters at all. Full entry and definition at Merriam-Webster.