Can anybody please explain to me why the Latin word focus "fireplace" and the Old Slavonic word пещь (peshch') "stove"* are not cognates (PIE /f/ yields Old Slavonic /p/)?

The Old Slavonic letter щ (shch) is always derived from the letters к (k) or г (g) + т (t); Я пеку (Ya peku) "I bake"

*see "The russian stove"

  • 2
    I'm voting to close this question as off-topic because it's not about Latin and does not show any particular research effort.
    – Draconis
    May 1, 2019 at 21:53

1 Answer 1


Grimm's Law only applies to Germanic languages; PIE as usually reconstructed has no *f.

Latin focus probably comes from PIE *bʰ-h₂- "shine" (see fax "torch"); Slavic пещь seems to come from PIE *p-kʷ- "cook". They're not related.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.