Hidden inside sum sit mus, sum, and ums, three-letter plays tied at the top of this rack with 5 points in Scrabble apiece. In all, 6 valid words come out of this rack, grouped by length below and checked for Words With Friends as well as Scrabble.
mus, sum, and ums tie for the highest Scrabble score from sum at 5 points. The top 6 of 6 words are shown here, with the full list organized by length below.
There are 3 three-letter words hiding in sum: two come from rearranging its letters, and sum itself is already a playable word with no unscrambling required. No common everyday answer stands out among these three-letter results, so let the score decide: the highest-scoring words are mus, sum, and ums, each worth 5 points in Scrabble.
The words below are listed alphabetically. Scores count playable tiles only and leave out premium-square bonuses.
There are 3 two-letter words that can be made by unscrambling the letters in sum. If a familiar word is all you need, start with um and us. For points, the strongest plays are mu and um — each worth 4 points in Scrabble.
The full list follows, sorted A to Z; every score reflects tile constraints and skips board bonuses.
Swap a single tile in sum and you get a different three-letter rack with its own word list. None of these appear in the results above — they share 2 of the 3 letters, not all of them.
sum is in the NWL, the official Scrabble word list for North America, and in the Words With Friends dictionary, so it's playable exactly as it stands and needs no unscrambling.
The 2-point gap between the two totals comes from the tile values themselves: Scrabble and Words With Friends price the same letters differently.
Dictionaries record eight senses for sum. Scrabble and Words With Friends score tiles and not meanings, so every sense below is worth the same 5 points on a Scrabble board:
sum is one of three three-letter words the same letters produce. No arrangement of the same tiles scores higher in Scrabble, so playing sum unchanged also takes the maximum points these letters offer.
The highest-scoring plays from these letters are mus, sum, and ums, worth 5 points in Scrabble, and nothing else built from sum earns more points in Scrabble. Words With Friends prices the same letters differently, so the top of the list changes on a Words With Friends board. Both scores count tile values only and exclude premium squares.
The letters in sum produce 6 valid words in the Scrabble and Words With Friends dictionaries. The word count by length is: 3 three-letter words and 3 two-letter words.