undeteriorated

English

undeteriorated (comparative more undeteriorated, superlative most undeteriorated)

Not deteriorated.
- 1872, R. F. Dearborn, Saratoga and How to See It‎^[1]:
  By this improvement the water flows with all its properties undeteriorated, retaining from source to outlet its original purity and strength.
- 1914-1917, Sir Ernest Shackleton, South!‎^[2]:
  Everything was just as it had been left, the petrol-tank partly filled and apparently undeteriorated.