Slovak jazyk

← Czech jazyk (cognate)

← Proto-Balto-Slavic *inźūˀ (inherited)

← Proto-Indo-European *dn̥ǵʰwéh₂s (inherited)

← Polish język (cognate)

← Proto-Slavic *ęzykъ (inherited)

→ Czech jazyk (cognate)

→ Slovak jazykovedec (compound)

→ Slovak jazykolam (compound)

→ Slovak prajazyk (affix)