Investigable \In*ves"ti*ga*ble\, a. [L. investigabilis. See {Investigate}.] Capable or susceptible of being investigated; admitting research. --Hooker. Investigable \In*ves"ti*ga*ble\, a. [L. investigabilis. See {In-} not, and {Vestigate}.] Unsearchable; inscrutable. [Obs.] So unsearchable the judgment and so investigable the ways thereof. --Bale.