Meaning

2 senses
  1. (archaic, not comparable)Of what.

  2. (archaic, not comparable)Of which.

Examples

2 sentences
  1. Whereof one cannot speak, thereof one must be silent.

    deWovon man nicht sprechen kann, darüber muss man schweigen. — virgil

  2. Tom knows whereof he speaks.

Origin

From Middle English wherof; equivalent to where + of. Compare the parallel formations of S

From Middle English wherof; equivalent to where + of. Compare the parallel formations of Swedish varav and Dutch waaraf.

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whereof — meaning, examples, forms, synonyms | Krumeto