Darkling /(därk"lĭng)/

Dark·ling

Darkling

adv.
  1. In the dark. [Poetic]
    So, out went the candle, and we were left darkling.
    As the wakeful bird Sings darkling.

Darkling

p. pr. & a.
  1. Becoming dark or gloomy; frowing.
    His honest brows darkling as he looked towards me.
  2. Dark; gloomy.