Impenetrable meaning

ĭm-pĕn'ĭ-trə-bəl
The definition of impenetrable is cannot be passed through or solved.

An example of something impenetrable is an overgrown hiking trail; an impenetrable trail.

An example of something impenetrable is a riddle that has never been figured out.

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Impossible to penetrate or enter.

An impenetrable fortress.

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Impossible to understand; incomprehensible.

Impenetrable jargon.

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Impervious to sentiment or argument.

An impenetrable heart.

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That cannot be penetrated or passed through.

An impenetrable jungle.

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That cannot be solved or understood; unfathomable; inscrutable.
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Unreceptive to ideas, impressions, influences, etc.
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Having that property of matter by which two bodies are prevented from occupying the same space at the same time.
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The fortress is impenetrable, so it cannot be taken.

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(figuratively) Incomprehensible; inscrutable.

Business jargon makes this document impenetrable, I can't understand it.

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Origin of impenetrable

  • From Middle French impenetrable, from Latin impenetrabilis.
    From Wiktionary