thereinto

adverb
there·​in·​to | \ t͟her-ˈin-(ˌ)tü How to pronounce thereinto (audio) \

Definition of thereinto

archaic
: into that or it

First Known Use of thereinto

14th century, in the meaning defined above

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The first known use of thereinto was in the 14th century

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to corrupt or become corrupted

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