Insuperable
Pronunciation : In*su"per*a*ble
Part of Speech : a.
Etymology : [L. insuperabilis: cf. OF. insuperable. See In- not, and Superable.]
Definition : Defn: 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.
Source : Webster's Unabridged Dictionary, 1913