4 letters · 10 words
Unscramble FLAT
FLAT is itself a valid word in both Scrabble and Words With Friends, worth 7 points and 8 respectively on plain squares. Rearranged and shortened, the same 4 letters make 10 words in total, from 4 letters down to two. No other word uses all 4 letters, which makes it a safe rack to hold. The highest scoring option is FLAT at 7 points in Scrabble. Having an even and horizontal surface, or nearly so, without prominences or depressions; level without inclination; plane. Though sun and moon Were in the flat sea sunk.
More ways to use these letters
Scores shown are the bare tile values. Premium squares, and the fifty point bonus for using all seven tiles, are not included because they depend on where the word lands. More on that here.