Definition of whereof
- knows whereof she speaks
- books whereof the best are lost
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.
: of what
What made you want to look up whereof? Please tell us where you read or heard it (including the quote, if possible).