In this work, we focuses on the assisted exploitation of lexical databases designed according to the LMF standard (Lexical Markup Framework) ISO-24613. The proposed system is a service-oriented solution which relies on a requirement-based lexical web service generation approach that expedites the task of engineers when developing NLP (Natural Language Processing) systems. Using this approach, the developer will neither deal with the database content or its structure nor use any language query. Furthermore, this approach will promote a largescale reuse of LMF lexical databases by generating lexical web services for all languages. For evaluating this approach we have tested it on the Arabic language.