• (a.) Incapable of being held; untenable; not defensible; as, an intenable opinion; an intenable fortress.
In·ten'a·ble adjective [ Prefix in- not + tenable : confer French intenable .] Incapable of being held; untenable; not defensible; as, an intenable opinion; an intenable fortress. [ Obsolete] Bp. Warburton.