impenetrable
Adjective
Medium difficulty
What does “impenetrable” mean?
adjective.impossible to pass through or enter.
SAT Usage
the term often appears in contexts related to barriers, challenges, or complex ideas in literature and science. It emphasizes the idea of something being beyond understanding or access, suggesting a deeper level of complexity or obscurity than simply being blocked, distinguishing it from similar words like "obscure," which may imply lack of clarity rather than impenetrability.
Common Confusions
Impenetrable implies an absolute inability to penetrate or comprehend, while obscure usually suggests something that is simply unclear or not easily understood.
Example Sentences
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The fortress is impenetrable, so it cannot be taken.
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Business jargon makes this document impenetrable, I can't understand it.
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When night falls, she cloaks the world in impenetrable darkness.
Word Parts: How to Remember “impenetrable”
Break “impenetrable” into its parts: in- (not). Knowing roots like these helps you decode unfamiliar SAT vocabulary.
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Prefix:
in-not (Latin)