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whereof

[hwair-uhv, -ov, wair-]
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adverb, conjunction
  1. of what, which, or whom.
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Origin of whereof

First recorded in 1150–1200, whereof is from the Middle English word wherof. See where, of1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for whereof

Historical Examples

  • Betty heard this speech, whereof she only fully understood the end, and trembled.

    Fair Margaret

    H. Rider Haggard

  • Whereof this letter, sealed with our affixed seal, is witness.

    Albert Durer

    T. Sturge Moore

  • The only result was that the Bishop lost 500, whereof 300 were subscribed by the people.

  • Whereof, by your light, you can judge and see that it is darkness.

  • The devise of the Embassage from Lubber-land, whereof also a parte was made.


British Dictionary definitions for whereof

whereof

adverb
  1. of what or which person or thing?
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pronoun
  1. of which (person or thing)the man whereof I speak is no longer alive
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for whereof

adv.

c.1200, from where + of. Cf. Swedish hveraf, Danish hvoraf, Dutch waarvan.

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Online Etymology Dictionary, © 2010 Douglas Harper