nighten

present singular third person nightens · participle present nightening · participle past nightened · past nightened

1. intransitiveTo become night or grow dark, as night.

   A dark place, a shadowed place, only a blot against the eternally nightened skies.

   2014, Harlan Ellison, Paingod

   2 more examples

   The flame of these smudge pots was just the type which presented itself in my vision, fluttering like a flag and giving off enough dark smoke to nighten the wooden sculpture above and around the flame.

   1996, Frederick Kiesler, Siegfried Gohr, Gunda Luyken, Frederick J. Kiesler: selected writings, page 60

   A flash of pretty fireworks in a nightening sky falling down, making the dry field catch fire.

   2005, David White, The Hallucinogenic Rooster, page 163