This reference and practice book looks at the most colourful and fun area of English vocabulary - idioms. This book will appeal to students at advanced level who want to understand and use the English really used by native speakers, and students preparing for higher level exams, such as CAE, CPE and IELTS. Over 1,000 of the most useful and frequent idioms, which learners are likely to encounter are presented and practised in typical contexts, so that learners using this book will have hundreds of idioms 'at their fingertips'. The book is informed by the Cambridge International Corpus, to ensure idioms are presented in authentic and natural contexts and the Cambridge Learner Corpus to ensure common learner errors in advanced exams are covered.