In this article the question is addressed how language played a pivotal role in the process of concealing and denying the use of doping in professional cycling in the period 1990-2012. The author concludes that the popular argument that the ‘Walls of Silence’ within professional cycling were based upon a system of ‘omertà’, is not convincing. Rather than that they were forced to keep their mouths shut, the people involved in the doping industry granted themselves a right to silence. The analysis also shows that the common vocabulary within cycling facilitated the processes of denial, as the concepts used – like preparation, recuperation, medical supervision and so on – are vague and ambiguous.