Blow away the competition with this guide to easily learning all two-letter words allowed in Scrabble and Words With Friends. This light-hearted book is a must-read for Scrabble fans, using fun facts, hilarious illustrations and memorable definitions to help readers easily learn and remember all the official two-letter words allowed, from 'aa' to 'zo'. Whether it's using 'xo' to devastating effect on a triple-letter score tile, or linking two words together with 'qi' to see you leapfrog to the top of the scoreboard, Two-Letter Words is great fun and highly useful when it comes to your next battle on the Scrabble board or online with Words With Friends.