Open Source Dutch Wordnet is a Dutch lexical semantic database.

It was created by removing the proprietary content from Cornetto (http://www2.let.vu.nl/oz/cltl/cornetto), and by using open source resources to replace this proprietary content.

Open Source Dutch WordNet contains 116,992 synsets, of which 95,356 originate from WordNet 3.0 and 21,636 synsets are new synsets. The number of English synsets without Dutch synonyms is 60,743, which means that 34,613 WordNet 3.0 synsets have been filled with at least one Dutch synonym.

This project has been co-funded by the Nederlandse Taalunie (2013-2014).

CLTL is project coordinator of the translation of the English WordNet to Dutch.