The semantic structure that the verb «arribar» currently presents in Catalan is the fruit of the complex history of semantic changes that have provoked the category's expansion from the basic core. In this work we pretend to follow the diachronic ways of these semantic changes from the theory of prototypes effects (Geeraerts. 1997:22). As a result, we offer the semantic net of the verb «arribar», from the exhaustive analysis of the contextual uses through 13th, 14th, 15th and 16th centuries.