01 a. Incapable of being passed over or surmounted; insurmountable; as, insuperable difficulties.
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1.
Incapable of being passed over or surmounted; insurmountable; as, insuperable difficulties.“And middle natures, how they long to join, Yet never pass the insuperable line?” — Pope.“The difficulty is enhanced, or is . . . insuperable.” — I. Taylor.
Syn.
Impassable; insurmountable; unconquerable.