whereof

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

Definition of whereof 

(Entry 1 of 2)

1 archaic : with or by which

2 : of what knows whereof she speaks

3a : of which books whereof the best are lost

b : of whom

whereof

adverb

Definition of whereof (Entry 2 of 2)

archaic

: of what whereof are you made— William Shakespeare

Examples of whereof in a Sentence

Recent Examples on the Web: Adverb

Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction. Michael Harriot, The Root, "Hillary Clinton, Jeff Sessions and America’s Secret Slave System," 12 June 2017

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

Conjunction

13th century, in the meaning defined at sense 1

Adverb

13th century, in the meaning defined above

Keep scrolling for more

Learn More about whereof

Statistics for whereof

Look-up Popularity

Time Traveler for whereof

The first known use of whereof was in the 13th century

See more words from the same century

Keep scrolling for more

More Definitions for whereof

whereof

conjunction

English Language Learners Definition of whereof

: of what

whereof

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

Kids Definition of whereof

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

Keep scrolling for more

More from Merriam-Webster on whereof

See words that rhyme with whereof

Spanish Central: Translation of whereof

Nglish: Translation of whereof for Spanish Speakers

Comments on whereof

What made you want to look up whereof? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

one that holds something together

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!