Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Many words missing

This book is a fantastic idea and has many useful synonyms. You can look the words up in Arabic or English which saves times. The author also puts each of the synonyms into sentences which is very useful. If you want to use this book to look up words as you read newspapers, novels, or other printed and broadcast media, it's less useful. It seems as though everytime I look up a word, it's not in this dictionary. This book is a good resource....just don't expect it to have most or all of the words you are seeking.