In the beginning, three chapters one has drawn attention to TMDs materials' basic properties such as synthesis and their structural descriptions for the different forms and kinds of defects formations and their impact on properties. To do this, herein work is focused to discuss the TMDs' different physical properties like mechanical properties including strain engineering, thermal properties: thermal conductivity, thermal expansion, thermoelectric, optical properties: excitons; binding energy, non-Rydberg excitonic, excitonic states in dark, excitonic collapse, intra transition, dynamics, interactive exciton, mirror exciton including heterostructure excitons, excitons, and trions. One has also paid attention to the electrical properties of the TMDs by providing a comprehensive discussion on electronic structure, ballistic transport, and mechanisms of scattering. Since two-dimensional TMDs have impassive magnetic properties concerning other materials, thereby, here magnetic properties of these materials have been also addressed by providing magnetism via grain boundaries, magnetism via vacancy, and doping-induced magnetism.