1

whereof

conjunction where·of \ hwer-ˈəv , -ˈäv , wer- , (ˌ)(h)wər- \

Definition of whereof

1 archaic :with or by which
2 :of what
  • knows whereof she speaks
3 a :of which
  • books whereof the best are lost
b :of whom

First Known Use of whereof

13th century


2

whereof

adverb

Definition of whereof

archaic
:of what
  • whereof are you made
  • —William Shakespeare

Recent Examples of whereof from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'whereof.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of whereof

13th century


WHEREOF Defined for English Language Learners

whereof

conjunction

Definition of whereof for English Language Learners

  • : of what


WHEREOF Defined for Kids

whereof

conjunction where·of \ hwer-ˈəv , wer- , -ˈäv \

Definition of whereof for Students

:of what :that of which
  • I know whereof I speak.


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serious difficulty or misfortune

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