eş: come mai ?, in base a che cosa ?, per quale causa ?, per quale motivo?, per quale ragione?, per quale scopo?
köken: Univerbation of per (“for”) + che (“which”), probably inherited from Vulgar Latin. Compare Neapolitan pecché, Sicilian pirchì, and further Romance parallels such as Sardinian pro chite, French pourquoi, Spanish porque/por qué, Portuguese porque/por que.
köken: A compound of var (“what”) + för, from Old Swedish hvar fore. Compare Norwegian and Danish hvorfor, English wherefore, Dutch waarvoor, German wofür.
eş: czemu, po co, z jakiego powodu, z jakiej przyczyny, czego
köken: Etymology tree Proto-Indo-European *delh₁- Proto-Indo-European *-yeh₂ Proto-Balto-Slavic *-jāˀ Proto-Slavic *-ja Proto-Slavic *dьľa Old Polish dla Proto-Indo-European *kʷ- Proto-Indo-European *kʷís Proto-Indo-European *kʷídder. Proto-Slavic *česo Old Polish czego univ. Old Polish dlaczego Polish dlaczego Inherited from Old Polish dlaczego. By surface analysis, univerbation of dla + czego. Compare…