The large amount of positive and negative reactions expressed about the works of the Viennese School of terminology, urges one to reexamine its important (main) sources and first of all, Eugen Wuster’s texts. Starting with a corpus extracted from the Einführung gathering the synonymic pairs emerging from the reading of this handbook, one can study the art of reformulation used in this text and analyse how terms are being introduced in a well designed construction. These terms appear like real keywords, representative of important themes in the theory of terminology. It is interesting to find that a holder of the terminological theory resting on the principle of biunivocity uses repeated (and paradoxical) synonymy.