The highest scoring Scrabble word containing OM is Zombify, which is worth at least 26 points without any bonuses. The next best words containing OM are Bombyxes, Chromize, Rhizomic and 1 more, which are each worth 24 points. Other high score words containing OM are Comprize (23), Coxcombs (23), Xylotomy (23), Zombiism (23), Zygomata (23).
There are 1,600 words that contain the letters OM in the Scrabble dictionary. Of those 746 are 8 letter words, 444 are 7 letter words, 238 are 6 letter words, 120 are 5 letter words, 42 are 4 letter words, 9 are 3 letter words and 1 is a 2 letter word.