Longman Thesaurus of American English (LTAE)
Oxford English Dictionary
Merriam-Webster’s 11 Pronunciation Dictionary*
Pronouncing American English. Sounds, Stress, and Intonation
Gertrude F. Orion. Second Edition.
Longman Pronunciation Dictionary 3rd Ed.
This new third edition of the Longman Pronunciation Dictionary gives students detailed guidance on over 225,000 pronunciations and more than 150.000 audio files.
MacMillan English Dictionary for Advanced Learners 2nd Edition
The second edition of the Macmillan English Dictionary now contains a wealth of new material, while building on the innovative features that won it two prestigious awards.
The most frequent 7,500 words in English — the ideal vocabulary size for an advanced learner — are printed in red, graded with stars, and explained with extra detail about how you should use them.