This is the 7th edition of the Collins COBUILD Advanced Dictionary.

This new edition of the flagship Collins COBUILD dictionary for advanced learners of English gives up-to-date coverage of today's English. Included is a mobile app for iPhone, Android, and mobile web browsers, allowing learners to check definitions and examples, and to hear pronunciation, anywhere.
This dictionary is ideal for upper intermediate and advanced learners of English. It covers all the words, phrases, and idioms that students need to learn and master to be able to speak and write effective English, and gives extensive help with grammar, including grammar patterns for many of the examples, and including a grammar reference in the supplement. A wide range of vocabulary-building features, many of them with full-colour illustrations, help with learning new words.

The dictionary also includes a new Visual Thesaurus, which provides alternatives to the 50 most over-used words in English; an Activity Guide, which gives exercises in dictionary use; a Grammar Reference; a Writer's Handbook, which gives guidance on spelling, punctuation, letter-writing, and CVs; a Speaker's Handbook, which gives advice on the best set phrases to use in key situations; Defining Vocabulary; Academic Word List