Word of the Day

insuperable \in-SOO-pur-uh-bul\, adjective:
Incapable of being passed over, surmounted, or overcome; insurmountable; as, "insuperable difficulties."

They have overcome almost insuperable odds that the poor facilities and elements have brought about.
--Raimund E. Goerler (Editor), [1]To the Pole: The Diary and Notebook of Richard E. Byrd, 1925-1927

Once the Soviet Union acquired the bomb, in 1949, proposals for nuclear disarmament were rejected on grounds that the character of the Soviet regime posed an insuperable obstacle.
--Jonathan Schell, [2]The Gift of Time

Insuperable comes from Latin insuperabilis, from in-, "not" + superare, "to go above or over, to surmount," from super, "above, over."