darkly

from WordNet (r) 3.0 (2006)

darkly
    adv 1: without light; "the river was sliding darkly under the
           mist" [syn: {darkly}, {in darkness}]
    2: in a dark glowering menacing manner; "he stared darkly at
       her"

from The Collaborative International Dictionary of English v.0.48

Darkly \Dark"ly\, adv.
   1. With imperfect light, clearness, or knowledge; obscurely;
      dimly; blindly; uncertainly.
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            What fame to future times conveys but darkly down.
                                                  --Dryden.
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            so softly dark and darkly pure.       --Byron.
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   2. With a dark, gloomy, cruel, or menacing look.
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            Looking darkly at the clerguman.      --Hawthorne.
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