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Definition of "undreamt of" []

  • Not imagined even in a dream (adjective)

WordNet. Princeton University. 2010.

Use "undreamt of" in a sentence
  • "Down in the engine room Lt. Jasper Abbott, a small, precise man with a neatly-trimmed black beard, worked under the Commander (E) in the ever-present task of using sluggish fuel oil to turn water into super-heated steam — a transformation undreamt of by ancient alchemists intent on changing base metals into gold, but far more valuable."
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