INSURMOUNTABLE

Source: 566, 567

insurmountable. Insurmountable, a. that cannot be overcome

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In′sur‐mount″a‐ble (?), a. [[Pref. in- not + surmountable: cf. F. insurmountable.]] Incapable of being passed over, surmounted, or overcome; insuperable; as, insurmountable difficulty or obstacle. Locke. Hope thinks nothing difficult; despair tells us that difficulty is insurmountable. I. Watts. Syn. — Insuperable; impassable; invincible.