In-sū'per-a-ble, a.

a. [Prefix in, not, and superable, q. v.; Lat. insuperabilis, O. Fr. insuperable, Pr. & Sp. insuperable, It. insuperabile.] Not superable; incapable of being passed over, overcome, or surmounted; insurmountable; as, insuperable difficulties, objections, or obstacles.

And middle natures, how they long to join! Yet never pass the insuperable line. Pope.

The difficulty is enhanced, or is, indeed, insuperable. I. Taylor.

Synonyms—Insurmountable; unconquerable; invincible.