darkling
  (ad.)在暗中(a.)黑暗的,令人可怕的
  Dark·ling, p. pr. & a.
  1. Becoming dark or gloomy; frowing.
     His honest brows darkling as he looked towards me.   --Thackeray.
  2. Dark; gloomy. “The darkling precipice.”
  ◄ ►
  Dark·ling adv.  In the dark. [Poetic]
     So, out went the candle, and we were left darkling.   --Shak.
  As the wakeful bird
  Sings darkling.   --Milton.
  darkling
       adj 1: uncannily or threateningly dark or obscure; "a darkling
              glance"; "secret operatives and darkling
              conspiracies"-Archibald MacLeish
       2: (poetic) occurring in the dark or night; "a darkling
          journey"