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We have studied the behaviour of the cubic spinel structure of FeV₂O₄ under high-pressure by means of powder X-ray diffraction measurements and density-functional theory calculations. The sample was characterized at ambient conditions by energy-dispersive X-ray spectroscopy, Raman spectroscopy, and X-ray diffraction experiments. One of the main findings of this work is that spinel FeV₂O₄ exhibits pressure-induced chemical decomposition into V₂O₃ and FeO around 12 GPa. Upon pressure release, the pressure-induced chemical decomposition appears to be partially reversible. Additionally, in combination with density-functional theory calculations, we have calculated the pressure dependence of the unit-cell volumes of both the spinel and orthorhombic FeV₂O₄ crystal structures, whose bulk moduli are <i>B</i>₀ = 123(9) and 154(2) GPa, respectively, finding the spinel FeV₂O₄ to exhibit the lowest bulk modulus amongst the spinel oxides. From experimental results, the same information is herein obtained for the cubic structure only. The Raman modes and elastic constants of spinel FeV₂O₄ have also obtained the ambient conditions.