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Unassailable vs Insurmountable - What's the difference?

unassailable | insurmountable |

As adjectives the difference between unassailable and insurmountable

is that unassailable is secure against attack; impregnable while insurmountable is incapable of being passed over, surmounted, or overcome; insuperable; as, insurmountable difficulty or obstacle.

unassailable

English

Adjective

(-)
  • secure against attack; impregnable
  • (by extension) undeniable, incontestable or incontrovertible
    • She won the debate with her unassailable logic.

    insurmountable

    English

    Adjective

    (en adjective)
  • Incapable of being passed over, surmounted, or overcome; insuperable; as, insurmountable difficulty or obstacle.