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'impenetrable' in a sentence

Learn how to use 'impenetrable' with 2 example sentences.


impenetrable adjective

: permitting little if any light to pass through because of denseness of matter

: impossible to understand

: not admitting of penetration or passage into or through


  • The wall appeared to be smooth and impenetrable.
  • The forest was thick and impenetrable.
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    Words near 'impenetrable' in the dictionary