1) Blameless 2) Clean-handed 3) Free of guilt 4) Guiltless 5) Innocent 6) Irreproachable 7) Not culpable 8) Not subject to blame 9) Unimpeachable Found on https://www.crosswordclues.com/clue/inculpable
In·cul'pa·ble adjective [ Latin inculpabilis : confer French incupable .] Faultless; blameless; innocent. South. « An innocent and incupable piece of ignorance.» Killingbeck. Found on http://www.encyclo.co.uk/webster/I/39