German nagen

← English nag (cognate)

← English gnaw (mention)

← Proto-Germanic *gnaganą (inherited)

← Middle High German nagen (inherited)

← Old High German nagan (inherited)

← Old High German gnagan (mention)

→ English gnaw (cognate)

→ German Nagetier (affix)

→ German Nager (affix)

→ German zernagen (prefix)

→ German benagen (prefix)