Longman Active Study Dictionary (Paper), 5e

“100,000 words, phrases and meanings, including the Academic Word List.40,000 corpus-based examples.Integrated Thesaurus explains 6000 synonyms, antonyms and related words.20,000 Collocations show typical word combinations.Clear definitions written using only 2000 common words.Grammar and Usage notes help students avoid common errors.Language Notes and Grammar Reference help accuracy.”