Collins COBUILD Advanced Learner's Dictionary The Source of Authentic English

No more guessing games or relying on teacher intuition. Working from a regularly updated corpus of over 4.5 billion words taken from authentic sources, Collins COBUILD products provide learner-friendly resources on how words are really used. (Dr Wayne Trotman, Teacher-Trainer, Izmir Katip Çelebi University, Turkey)

COBUILD, an acronym for Collins Birmingham University International Language Database, is a research facility set up at the University of Birmingham in 1980 and funded by Collins.