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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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Short "hint"

Unable to be pieced. Or unable to be comprehended.

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Usage examples (36)
  • We can see well into the past; we can guess shrewdly into the future; but that which is rolled up and muffled in impenetrable folds is today.
  • An impenetrable fortress
  • impenetrable jargon
  • When I say 'impenetrable' I am not referring to these mechanical horrors.
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The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.