This new edition of the Collins COBUILD American Advanced Dictionary offers up-to-date coverage of today's English in a clear, attractive format.

This dictionary is ideal for upper intermediate and advanced learners of American English.

It covers all the words, phrases and idioms that students need to learn and master to be able to speak and write effective American English.

With full-sentence definitions written in simple, natural English, this dictionary is easy to use and understand.

The examples, taken from the 4.5-billion-word Collins Corpus, show learners how the words are used in authentic contexts.

What is “COBUILD”?

“COBUILD” is an acronym for “Collins Birmingham University International Language Database” and is the name of a collaborative research project between the famous British dictionary publisher Collins and Birmingham University.

It is an epoch-making monolingual dictionary of “living English” that uses the huge database accumulated in the corpus ― The Bank of English™.

It was also the world's first dictionary to be based on a corpus and has been widely loved by English learners around the world for more than 20 years.