- adjective
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- that cannot be entered, passed through, etc [Barron]
- incapable of being penetrated or pierced or incapable of being comprehended; inscrutable [Taisha]
More word meanings for impenetrable
from leading online dictionaries:
- Wiktionary:
- impenetrable @ wiktionary
- WordNet:
- impenetrable @ wordnet.princeton.edu
- Merriam-Webster Online:
- impenetrable @ M-W.com
- MSN Encarta:
- impenetrable @ Encarta
- American Heritage Dictionary of the English Language:
- impenetrable @ AHD provided by Yahoo! Education
- Answers.com:
- impenetrable @ Answers.com
- Search for more definitions on Google:
- Google define:impenetrable
- Search for more definitions on Yahoo!:
- Yahoo! define:impenetrable
- Search for more definitions on Ask.com:
- Ask.com dictionary: impenetrable