We report a detailed study on the structural, angle-dependent magnetic and magnetotransport properties of highly anisotropic off-stoichiometric ${\mathrm{CeCuBi}}_2$ single crystals. Our results reveal ${\mathrm{CeCuBi}}_2$ as an anisotropic Kondo antiferromagnet exhibiting complex field-induced magnetic behavior and unusual magnetotransport properties. Magnetic susceptibility and specific heat measurements reveal antiferromagnetic (AFM) ordering below $T_N\sim 14\mathrm{K}$ with strong anisotropy and weak heavy-fermion behavior. Electrical transport measurements show highly anisotropic resistivity and a broad hump around $\sim 47\mathrm{K}$, indicative of Kondo-driven heavy-fermion behavior. Magnetization measurements reveal multiple field-induced metamagnetic phases, while ac susceptibility measurements indicate slow spin dynamics and spin-glass-like behavior in intermediate field-induced magnetic states. Furthermore, we observe large and strongly anisotropic magnetotransport responses, including room-temperature magnetoresistance of $\sim 22\%$ at 300 K and 9 T and butterflylike anisotropic magnetoresistance with AMR values reaching $\sim 10.9\%$. These results highlight a strong interplay among Kondo correlations, magnetic anisotropy, and field-tunable spin configurations, making ${\mathrm{CeCuBi}}_2$ a possible platform for exploring correlated and anisotropic quantum phenomena.

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• Electrical conductivity
• Electrical properties
• Magnetic interactions
• Magnetic phase transitions
• Magnetic susceptibility
• Magnetism
• Magnetotransport