not made dim or less bright;
"surprisingly the curtain started to rise while the houselights were still undimmed"
- Greek martial honour stands undimmed.
- His mission, though, is undimmed.
- Now 80, Mr Cooper's vigour is undimmed.
- The religious faith that animates southern life is undimmed.
- But she also wears a veil, a sign that her religious faith remains undimmed.
- He sings with intensity and a voice undimmed by the passing of time.