WordNet Domains is a lexical resource created in a semi-automatic way by augmenting WordNet with domain labels. WordNet Synsets have been annotated with at least one semantic domain label, selected from a set of about two hundred labels structured according the WordNet Domain Hierarchy.

Information brought by domains is complementary to what is already in Wordnet. A domain may include synsets of different syntactic categories and from different WordNet sub-hierarchies. Domains may group senses of the same word into homogeneous clusters, with the side effect of reducing word polysemy in WordNet.

WordNet Domains includes WordNet-Affect, an additional hierarchy of "affective" domain labels, with which the synsets representing affective concepts are further annotated.

WordNet Domains is distributed under a Creative Commons Attribution 3.0 Unported License (obtain WordNet Domains).
WordNet Domains has been integrated in the multilingual lexical database MultiWordNet and it is also included in the distribution of MultiWordNet.