What It Scores
HIGHISH is a valid word in the tournament list this site uses. Tile values only, before any premium square: 17 in Scrabble and 18 in Words With Friends. The letters break down as H4 I1 G2 H4 I1 S1 H4.
At seven letters this plays a whole rack, which is a bingo and worth 67 in Scrabble once the 50 point bonus lands.
Words Made From The Letters In HIGHISH
15 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.
5 letter words (1)
4 letter words (4)
3 letter words (5)
2 letter words (5)
Next: the Word Unscrambler for any letters at all. Full entry and definition at Merriam-Webster.