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American pronunciation of 

impenetrable

view main entry for impenetrable adjective  /ɪmˈpenətrəb(ə)l/
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derived word

impenetrably

adverb

This is the American English pronunciation of impenetrable.

View British English pronunciation of impenetrable.

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bit rot

when electronic information is lost because the software or devices needed to read it are no longer available

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troll factory

a company that pays its employees to write online comments in favour or against somebody or something posing as ordinary Internet users

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