More than 200,000 words inside an English dictionary, which works without an Internet connection.
Da Dictionary English Pro is based on WordNet 3.0 by Princeton University, combined with transcriptions. It also features encyclopedic data with information about famous people, buildings and so on. Search results are shown as you type.
Most native speakers use between 2,500 and 5,000 words daily and have a "passive vocabulary" of 15-20,000 words that they know but dont often use. Compare that to a 200,000 words dictionary.
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