ultratough

comparative more ultratough · superlative most ultratough

1. Extremely tough; of utmost toughness.

   The ultratough baseball captain stepped up, “Any other last wishes?’ he inquired.

   1938, Army Navy Journal 1938-02-05: Volume 75, Issue 23, Gannett Company, Incorporated, page 476

   2 more examples

   The U.S.S Sam Houston had to be as reliable and as strong as human ingenuity could make it; and it is largely made from steels that didn't even exist 10 years ago. To resist the enormous pressure of very deep dives, the hull -- two-thirds of the ship's total weight -- is made from HY-80, an ultratough armorplate steel developed jointly by the Navy's Bereau of Ships and United States Steel metallurgists.

   1962, United States Congress, Congressional Record, Congress, page 18911

   At the front, the nose cone was on ultratough maraging steel and needle-pointed. This too would eventually become dispensable.

   1994, Frederick Forsyth, The Fist of God, Bantam Books, →ISBN, page 310