The French Lexical Network (fr-LN) is a global model of the French lexicon presently under construction. The fr-LN accounts for lexical knowledge as a lexical network structured by paradigmatic and syntagmatic relations holding between lexical units. This paper describes how morphological knowledge is presently being introduced into the fr-LN through the implementation and lexicographic exploitation of a dynamic morphological model. Section 1 presents theoretical and practical justifications for the approach which we believe allows for a cognitively sound description of morphological data within semantically-oriented lexical databases. Section 2 gives an overview of the structure of the dynamic morphological model, which is constructed through two complementary processes: a Morphological Process--section 3--and a Lexicographic Process--section 4.