- Insusceptible - Sadly unlivable around points at river opening, but protected from attack - Unassailable - Incapable of being wounded, or of receiving injury. - Unanswerable; irrefutable; that can not be refuted or
convinced; as, an invulnerable argument.
- Absolute foreigner imprisoned within - I nab the French - Unassailable - Incapable of being alienated, surrendered, or
transferred to another; not alienable; as, in inalienable birthright.
- Impenetrable - Invincible - Invulnerable - Not to be overthrown - Unassailable - Not to be stormed, or taken by assault; incapable of
being subdued; able to resist attack; unconquerable; as, an impregnable
fortress; impregnable virtue. - Capable of being impregnated, as the egg of an animal,
or the ovule of a plant.