Impassable

Definition:

• (a.) Incapable of being passed; not admitting a passage; as, an impassable road, mountain, or gulf.

Compare impassable with other words:

impassable vs. untravellable

impassable vs. impenetrable

impassable vs. invincible

impassable vs. impracticable

impassable vs. insuperable

closed vs. impassable