sou needs no unscrambling at all — the three-letter word is already the strongest play its own letters allow, banking 3 points in Scrabble as it stands. In all, 4 valid words come out of this rack, grouped by length below and checked for Words With Friends as well as Scrabble.
Only one three-letter word uses the letters in sou — and it is sou itself. No unscrambling is needed: the word is already playable as written, worth 3 points in Scrabble.
There are 3 two-letter words that can be made by unscrambling the letters in sou. If a familiar word is all you need, start with so and us. For points, the strongest plays are os, so, and us — each worth 2 points in Scrabble.
The full list follows, sorted A to Z; every score reflects tile constraints and skips board bonuses.
sou appears in the word lists that Scrabble and Words With Friends validate against, so the rack is playable exactly as it stands and needs no unscrambling. Its three letters score 3 points in Scrabble and 4 points in Words With Friends. The 1-point gap between the two totals comes from the tile values themselves: Scrabble and Words With Friends price the same letters differently.
Dictionaries record one sense for sou. Scrabble and Words With Friends score tiles and not meanings, so every sense below is worth the same 3 points on a Scrabble board:
sou is the only three-letter word the same letters produce. No arrangement of the same tiles scores higher in Scrabble, so playing sou unchanged also takes the maximum points these letters offer.
The highest-scoring play from these letters is sou, worth 3 points in Scrabble, and no other word from sou 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 sou produce 4 valid words in the Scrabble and Words With Friends dictionaries. The word count by length is: 1 three-letter word and 3 two-letter words.
The anagram solver inside UnscrambleX compares sou against the dictionaries used by Scrabble, Words With Friends, Word Jumble, and Text Twist, keeps every arrangement those dictionaries contain, and sorts the confirmed words by tile score. That sorting step is why sou appears at the top of the results. A word on this page is a legal play in Scrabble and Words With Friends, not a letter combination that only looks like a word.
Unscrambling sou produces two kinds of plays in Scrabble and Words With Friends: one high-scoring word, and one short word that fits a crowded board.
The high-scoring play is sou. The short plays are os and so, and they cover the turns when the board leaves no open line long enough for the bigger word.
The score gap is exact: the lowest-scoring word from these letters earns 2 points in Scrabble and the highest-scoring word earns 3 points. The letters are identical in both cases, so the board decides the value of the turn.
UnscrambleX lists every word from these letters with its Scrabble score and its Words With Friends score, so the choice between points and board position is made from numbers instead of memory.
The results list works as a vocabulary drill for Scrabble and Words With Friends players. Cover the list, rearrange sou in your head, and count how many of the 4 words you find before you check the answers.
Experienced players find the long words such as sou without help. The short words are the ones that go unnoticed, and short words decide close games in Scrabble, Words With Friends, and Text Twist.
Repeat the drill on a few letter sets each day. Vowel positions, common endings such as -ed and -ing, and high-value tiles become recognisable without an unscrambler.
Unscrambling adds words that reading never supplies. No Scrabble player opens a dictionary to look for os, and the word enters a playable vocabulary only because a results list produced it.
Spelling accuracy improves at the same time. Building sou from loose tiles forces one letter order and returns a correct or incorrect verdict inside the same move, which is faster feedback than a spelling test. Plays from sou range from 2 to 3 points in Scrabble, so every turn also asks a scoring question: take the points now, or keep the flexible tiles for the next turn.
Words assembled from tiles are remembered better than words only read, and timed games such as Text Twist and Word Jumble reward that recall directly.