dis and ids tie for the highest Scrabble score from yids at 4 points. The top 5 of 5 words are shown here, with the full list organized by length below.
Swap a single tile in yids and you get a different four-letter rack with its own word list. None of these appear in the results above — they share 3 of the 4 letters, not all of them.
The highest-scoring plays from these letters are dis and ids, worth 4 points in Scrabble, and nothing else built from yids 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 yids produce 5 valid words in the Scrabble and Words With Friends dictionaries. The word count by length is: 2 three-letter words and 3 two-letter words.