Selecting the right word when you write helps you communicate clearly. Many words in the English language can be mixed-up with another word that sounds like it or looks similar, such as adapt and adept or affect and effect. I have listed a few of these troublesome words, what they mean, and how to use them correctly in a sentence; this list of definitions, however, can not replace your dictionary. By discussing every meaning of possible confusing words, I try to show how one words differs from another in a group of words that sound or look very much alike. I hope this book will benefit those who wish to speak and write proper and effective English.