A cutting tool and a cutting insert, each of which including a base surface and an anti-slip arrangement adjacent thereto. Each anti-slip arrangement includes an actuator surface and non-parallel first and second abutment surfaces, and the actuator surface of the cutting tool is a surface of a clamp of the cutting tool. The cutting insert is mounted on the cutting tool via engagement of the base surfaces thereof and the clamp is operable to bias the actuator surfaces against each other and thereby force the first and second abutment surfaces against each other, for preventing slippage of the cutting insert along the tool's base surface.