In primal meaning that notion of common in political field today reaches, a shared urgency stands out for thinking their conceptual redefinition spaces once again, mainly, that one related to idea of Communism. Such effort demands going back to unstable and critical conditions that category encompasses starting with their amazing archaic connotations. This article inquires into a fundamental but so much thought meaning of common, initial etymological tracks which oscillate between solidarity forms in constitution of all of us and warlike composition practices for reduction of the other. The common is confronted here as a not thought concept, enrolled in discursive teleologies that have conferred ambiguous meanings to it and redefining it as a naturalized shared difference by coextensivity of similarity. Under this hypothesis singularities concur urging to think of communitarian nexuses from very other conditions of possibility.