What It Scores
HYDRO is a valid word in the tournament list this site uses. Tile values only, before any premium square: 12 in Scrabble and 12 in Words With Friends. The letters break down as H4 Y4 D2 R1 O1.
Anagrams of HYDRO (1)
Same letters, different order. Any of these plays the same tiles for the same score.
Words Made From The Letters In HYDRO
20 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 (11)
2 letter words (7)
Longer Words Containing HYDRO
HYDRO appears inside each of these, which is what makes it worth knowing as a hook.
Next: the Word Unscrambler for any letters at all. Full entry and definition at Merriam-Webster.