I would define "conspiracy-thinking" as belief-forming that's driven by fear, even if its proposition can't be totally disproved (truthfully, nothing can). Or,

I would define "conspiracy-thinking" as belief-forming that's driven by fear, even if its proposition can't be totally disproved (truthfully, nothing can). Or, if you like, belief-forming that neglects to apply Occam's Razor. But that's an inherently subjective thing. So the only thing that's important in this case is the intentional propagation of false information.