What It Scores
KNACKED is a valid word in the tournament list this site uses. Tile values only, before any premium square: 18 in Scrabble and 19 in Words With Friends. The letters break down as K5 N1 A1 C3 K5 E1 D2.
At seven letters this plays a whole rack, which is a bingo and worth 68 in Scrabble once the 50 point bonus lands.
Words Made From The Letters In KNACKED
58 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 (7)
4 letter words (20)
3 letter words (20)
2 letter words (11)
Next: the Word Unscrambler for any letters at all. Full entry and definition at Merriam-Webster.