The Cambridge Idioms Dictionary is a comprehensive reference that explains over 7,000 idioms current in British, American, and Australian English. This second edition has been fully updated with new idioms, such as "think outside the box" and "the new black," reflecting contemporary usage. The dictionary features a new, attractive page layout with idioms highlighted in color for easy reference. Clear explanations and example sentences are provided for every idiom, with the most common idioms highlighted to guide learners on which to prioritize. Additionally, topic sections cover useful language areas, such as agreeing and disagreeing, and telling stories.​

The Cambridge Idioms Dictionary is designed to help learners understand and use idioms with confidence. It offers clear explanations and example sentences for each idiom, making it an essential tool for students, teachers, and anyone interested in the nuances of English idiomatic expressions. The inclusion of topic sections and the highlighting of common idioms make it particularly user-friendly and practical for language learners aiming to enhance their fluency and comprehension.