Attribution & third-party data

OpenWords ships word and definition data derived from Open English WordNet 2025 (en-word.net).

Open English WordNet is developed by the Open English WordNet team and is licensed under the Creative Commons Attribution 4.0 International License (CC-BY 4.0). Copyright (c) 2019-present, The Open English WordNet Team. License.

It is derived from Princeton WordNet, Copyright 2011 by Princeton University, used under the Princeton WordNet License. License.

The derived dictionary artifacts inherit the attribution obligations of both source licenses.