A theft-deterrent outdoor lighting fixture having an auger that is connected to the lowermost end of the lighting fixture by means of a one-way clutch mechanism. The one-way clutch mechanist engages or locks the auger relative to the fixture when turned in the same direction of the thread of the auger but free-wheels in the reverse direction to preclude removal of fixture. In another embodiment, the theft-deterrent outdoor lighting includes an electronic design that detects movement representative of theft and sounds an alarm to draw attention to the theft while in progress. In still another embodiment, the theft-deterrent outdoor lighting includes a wiring harness that is destructively severed should the lighting fixture be pulled from the ground, thereby rendering the lighting inoperable in the case of theft.