undimmed

adj

1. (figuratively, sometimes)Not dimmed.

   “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.”

   “As I studied the songs that Kaczerginsky had compiled, I was struck not only by the pathos, sadness, and helpless feelings of authors both known and unknown, but also by the often undimmed spirit, hopefulness, and visions of a brighter future.”

verb

1. (form-of, participle, past)simple past and past participle of undim