In‐su″per‐a‐ble (?), a. [L. insuperabilis: cf. OF. insuperable. See In- not, and Superable.] 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.
— In‐su″per‐a‐ble‐ness, n. — In‐su″per‐a‐bly, adv.