undiminished

un- +‎ diminished

undiminished (comparative more undiminished, superlative most undiminished)

1. Not diminished.
   • 1951 April, D. S. Barrie, “British Railways: A Survey, 1948-1950”, in Railway Magazine, number 600, page 232:

     But the importance of the railways as main arteries of the national economy remains undimmed, just as their fascination for the railway enthusiast is surely undiminished.

   • 2020 May 20, Paul Stephen, “Network News: Greenwood: Rail projects vital to economic recovery”, in Rail, page 13:

     Amid the uncertainty over when (or if) demand for rail travel will return to pre-pandemic levels, Greenwood anticipates that additional government commitments both to reform the rail industry and to decarbonise the network will remain undiminished.