Legal language uses juridical as well as ordinary words, both in civil law and in common law systems. The author discusses the idea that the semantic difference between the two levels of language (ordinary and technical) is not still well elucidated, and that this lack can hinder the interpretation of statutes. The interdisciplinary research on law and pragma-semantics may suggest the effective way. In fact, pragmatics may offer the interpretative strategies of the indeterminate semantics of ordinary words. Legal theories that distinguish between the written law and "mute" law suggest to pragmatics the plausibility of the idea of two levels of language and of their different usages (procedural, reflexive).
Keywords: Lexic, interpretation, mute law, ordinary meaning, pragmatics, procedural semantics, semantic indeterminacy.