English

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Etymology

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From tenebrous +‎ -ly.

Adverb

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tenebrously (comparative more tenebrously, superlative most tenebrously)

  1. In a tenebrous way.
    • 1982, Stephen King, The Raft:
      And then, tenebrously, his mind whispered: Do it anyway. Put her down and swim for it.
      But he did not, could not. An awful guilt rose in him at the thought.