A formal structure for a calculable and covariant phenomenology of particles with arbitrary spin is presented. As wave equations for particles with high spin have difficulties, the construction proceeds without reference to any specific wave equation. The 2(2j+1) covariant particle/antiparticle spinors for any spin are explicitly constructed. These covariant spinors are then used to construct configuration, as well as momentum space, Feynman‐Dyson propagators for arbitrary spin.