The difference between Impenetrable and Unfathomable
When used as adjectives, impenetrable means not penetrable, whereas unfathomable means impossible to fathom or understand.
check bellow for the other definitions of Impenetrable and Unfathomable
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Impenetrable as an adjective:
Not penetrable.
Examples:
"The fortress is impenetrable, so it cannot be taken."
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Impenetrable as an adjective (figuratively):
Incomprehensible; fathomless; inscrutable.
Examples:
"Business jargon makes this document impenetrable, I can't understand it."
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Impenetrable as an adjective:
Opaque; obscure; not translucent or transparent.
Examples:
"When night falls, she cloaks the world in impenetrable darkness."
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Unfathomable as an adjective:
Impossible to fathom or understand.
Examples:
"synonyms: fathomless incomprehensible unintelligible Thesaurus:incomprehensible"
"ant explicable intelligible Thesaurus:comprehensible"
"The sheer numbers they attacked with were unfathomable."
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Unfathomable as an adjective:
Difficult to penetrate.
Examples:
"synonyms: impenetrable impregnable"
"ant penetrable pregnable"