The Official Scrabble Players Dictionary, 4th edition (OSPD4) is the essential tool of serious Scrabble players. It lists more than 100,000 2- to 8-letter words. Most dirty words have been expunged from this edition. Serious competitors actually memorize this book!
But beware, it may not settle disputes among friends and family. Some folks will complain when you try to use many of these words. Some object to words such as ìedî that are arguably abbreviations, not words. And there are plenty of words that seem a bit too foreign, such as ìciaoî, ìcasaî and "qi". And then there are the completely off the wall words like ìqophî and ìaaî. But if your group accepts the authority of the OSPD4 and if you learn some of its juicy little tidbits, your game will be better, and more fun.
Our well worn copy is re-inforced with box tape and on the inside of the tattered covers are recorded house records including highest single word score, highest two player total, lowest score on a bingo (59 points).