This thesaurus/dictionary can be used to look up words from almost any program. In addition to displaying sense definitions and synonyms, WordWeb can find sets of related words. The database has more than 160,000 root words and 222,000 senses many proper nouns, pronunciations, and usage tags. WordWeb works off line, but when online you can also quickly view Web references such as the Wikipedia encyclopedia.
[Top 10] Easy to use and fast response
It is compatible with many platforms. You can check out each words' definition with pronunciation.
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You may need to pay to upgrade the version of having more pronunciation functions.