As a result of nanotechnological evolution, nanomaterials (NMs) have become pivotal to novel developments in all facets of human endeavors. As a result of their enchanting physically and chemically affiliated features, these NMs have garnered great attention in the industrial and academic segments and include single elemental mono-layered crystals, referred as Xenes (graphene, borophene, phosphorene and silicene), modified single-elemental and layered crystal derivatives referred as MXenes (M-X) (Ti₂CO₂, Ti₃C₂Tx, and Ti₃C₂), Xanes (graphene and borophane), transitional metallic halides (CrI₃), semiconducting and insulating entities of groups III−V (boron nitride), transitional metallic dichalcogenides (TaSe₂ and MoS₂), organically−inorganically affiliated hybridized perovskites (Pb(C₄H₉NH₃)₂I₄), as well as post-transitional metallic chalcogenides (GaS and GaSe). MXenes (M-X), amongst these NMs have attracted remarkable academic interests because of their prolific features as well as effective functionalization of polymeric matrices for enhanced flame retardancy, thermal, electromagnetic interference shielding (EMI SE), mechanical and electrochemical features. Therefore, this elucidation explores newly emerging construction, characterization, features especially EMI SE, as well as multifarious uses of M-X@polymeric nanoarchitectures.