Abstract
The testimonies of Stilpo of Megara show an anti-Platonic position within the megaric program against fundationists attempts. This paper studies a particular point of this deployment. We will review the origin of the views that locate thruth on the onomastic or on the predicative level. This initial survey will provide the basis for the study of the paradoxes of the nomination, an element Stilpo used as a tool to challenge the theory of Forms, and the analysis of the aporias of predication, through which he rejects the combination of parts of the sentence in order to represent reality. The figure of Stilpo reveals the dialogical context in which ancient philosophies developed and, at the same time, displays ways of thinking the relationship between language and reality often forgotten.