While doing so is not a good way to enhance your vocabulary, it is an excellent way to improve your play.
Knowing which words are acceptable - even if you have no idea of their definitions - is a perfectly legitimate strategy, and all expert players have memorized all the two-letter words and often the three-letter words as well.
Be sure to know which version you're playing! If you've reached this page, you probably already recognize the importance of these words for success in winning at Scrabble, especially the two-letter words. I have included the TWL (Tournament Word List), a standard North American list which is used by a lot of online Scrabble-type sites, followed by the more extensive international SOWPODS list. Here are all the two-letter words and three-letter words that are acceptable for use in Scrabble(R).
