Insurmountable vs Impassable - What's the difference?
insurmountable | impassable |
Incapable of being passed over, surmounted, or overcome; insuperable; as, insurmountable difficulty or obstacle.
Incapable of being passed over, crossed, or negotiated.
(of an obstacle) Incapable of being overcome or surmounted.
(of currency) Not useable as legal tender.