Hidden inside castoreum sit castoreum and outscream, nine-letter plays tied at the top of this rack with 13 points in Scrabble apiece. In all, 664 valid words come out of this rack, grouped by length below and checked for Words With Friends as well as Scrabble.
castoreum and outscream tie for the highest Scrabble score from castoreum at 13 points. The top 10 of 664 words are shown here, with the full list organized by length below.
There are 2 nine-letter words hiding in castoreum: one comes from rearranging its letters, and castoreum itself is already a playable word with no unscrambling required. No common everyday answer stands out among these nine-letter results, so let the score decide: the highest-scoring words are castoreum and outscream, each worth 13 points in Scrabble.
There are 4 eight-letter words that can be made by unscrambling the letters in castoreum. If a familiar word is all you need, start with customer. For points, the strongest plays are costumer, customer, and racemous — each worth 12 points in Scrabble.
Rearranging the letters in castoreum produces 26 valid seven-letter words. If a familiar word is all you need, start with coaster, costume, maestro, and scrotum. For points, 6 words tie at 11 points, including costume, scrotum and comates.
Unscrambling castoreum turns up 106 six-letter words. If a familiar word is all you need, start with actors, caters and course. For points, 23 words tie at 10 points, including creams, mascot and scream.
There are 188 five-letter words that can be made by unscrambling the letters in castoreum. If a familiar word is all you need, start with actor, amuse and atoms. For points, 25 words tie at 9 points, including comas, comes and crams.
Rearranging the letters in castoreum produces 205 valid four-letter words. If a familiar word is all you need, start with acts, arms and arts. For points, 16 words tie at 8 points, including scam, scum and came.
Unscrambling castoreum turns up 108 three-letter words. If a familiar word is all you need, start with act, are and arm. For points, the strongest plays are cam, cum, mac, and moc — each worth 7 points in Scrabble.
There are 25 two-letter words that can be made by unscrambling the letters in castoreum. If a familiar word is all you need, start with am, as and at. For points, 8 words tie at 4 points, including am, me and um.
5 ten-letter words can be made using all the letters in castoreum plus one additional letter.
Swap a single tile in castoreum and you get a different nine-letter rack with its own word list. None of these appear in the results above — they share 8 of the 9 letters, not all of them.
castoreum 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 3-point gap between the two totals comes from the tile values themselves: Scrabble and Words With Friends price the same letters differently.
castoreum is one of two nine-letter words the same letters produce. No arrangement of the same tiles scores higher in Scrabble, so playing castoreum unchanged also takes the maximum points these letters offer.
The highest-scoring plays from these letters are castoreum and outscream, worth 13 points in Scrabble, and nothing else built from castoreum 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 castoreum produce 664 valid words in the Scrabble and Words With Friends dictionaries. The word count by length is: 2 nine-letter words, 4 eight-letter words, 26 seven-letter words, 106 six-letter words, 188 five-letter words, 205 four-letter words, 108 three-letter words and 25 two-letter words.