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