Frustrated magnetism is a frontier theme of modern condensed matter research. The presence of competing interactions in frustrated systems lead to the emergence of highly degenerate ground states. The frustrated magnetism is prevalent in the diverse class of materials and offers an extremely fertile ground to discover novel states such as spin ice, spin liquid, skyrmions etc. The work presented in this thesis is essentially devoted to three different magnetically frustrated systems, which advances our understanding of matter and materials and also push important developments of experimental and theoretical methods. The investigation of magnetic frustration in the three different systems involves the pyrochlore lattice CdYb2Se4, the diamond lattice MnSc2X4 (X=S, Se), and the triangular lattice MGa2S4 (M=Fe, Ni) using neutron scattering as the principal probe.