This article focuses on different Czech linguistic facts within the framework of operative linguistics. As far as we know, Czech has never been the object of any study based on the notion of operativity, which stems from Gustave Guillaume’s Psychomechanics of Language. The aim of this article is therefore to provide an overview of various aspects of Czech in the perspective of an operative approach: the gender system, the category of number, the possessive determiners and pronouns and finally the verbal system. As will be shown, Guillaume’s binary tensor widely structures the systems taken into consideration here.