Developed at the University of Lisbon, Dept. of Informatics, by the NLX-Natural Language and Speech Group.

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MWN.PT - MultiWordnet of Portuguese is a lexical semantic network for the Portuguese language shaped under the ontological model of wordnets. It was developed and is mantained by the NLX-Natural Language and Speech Group at the University of Lisbon, Department of Informatics.


MWN.PT - MultiWordnet of Portuguese (version 1) spans over 17,200 manually validated concepts/synsets, linked under the semantic relations of hyponymy and hypernymy. These concepts are made of over 21,000 word senses/word forms and 16,000 lemmas from both European and American variants of Portuguese. They are aligned with the translationally equivalent concepts of the English Princeton WordNet and, transitively, of the MultiWordNets of Italian, Spanish, Hebrew, Romanian and Latin.

It includes the subontologies under the concepts of Person, Organization, Event, Location, and Art works, which are covered by the top ontology made of the Portuguese equivalents to all concepts in the 4 top layers of the English Princeton wordnet and to the 98 Base Concepts suggested by the Global Wordnet Association, and the 164 Core Base Concepts indicated by the EuroWordNet project.

This wordnet was made acessible to be consulted online in May 2008. At this date, it is the first publicly available non fragmentary wordnet for Portuguese, that integrates complete chains of semantic relations from the topmost concepts downwards until individual concepts. It is also the largest wordnet for Portuguese.


MWN.PT - MultiWordnet of Portuguese is being developed by António Branco, with the assistance of Mariana Avelãs and Clara Pinto, and with the help of Rosa del Gaudio, at the NLX-Natural Language and Speech Group, of the University of Lisbon, Department of Informatics.


The work leading to the MWN.PT - MultiWordnet of Portuguese benefited from the cooperation with Emanuele Pianta and his team at FBK - Fondazione Bruno Kessler (former ITC -IRST), from Trento, Italy, to whom we are very grateful. In particular, it benefited from the tools to project, edit, manage and make available the wordnet, which were produced and are maintaned by his MultiWordNet project.

Contact Us

Contact us using the following email address: 'nlxgroup' concatenated with 'at' concatenated with ''.

Acquiring MWN.PT

The wordnet MWN.PT is released through ELDA-Evaluation and Language Resources Distribution Agency. Details are provided here.