The Oxford Advanced Learner's Dictionary is the world's bestselling advanced level dictionary for learners of English.

Now in its 10th edition, the Oxford Advanced Learner’s Dictionary, or OALD, is your complete guide to learning English vocabulary with definitions that learners can understand, example sentences showing language in use, and the new Oxford 3000™ and Oxford 5000™ word lists providing core vocabulary that every student needs to learn. OALD is more than a dictionary. Take your English skills to the next level with extra resources and practice including the online iSpeaker and iWriter, or practise words anytime, anywhere with the Oxford Advanced Learner’s Dictionary app.