Norwegian Bokmål Oslo

← Proto-Germanic *ansuz (inherited)

← Proto-Indo-European *h₂ems- (root)

← Proto-Indo-European *h₂énsus (inherited)

← Proto-Indo-European *h₂ems- (derived)

← Proto-Indo-European *lewk- (mention)

← Old Norse Ósló (inherited)

← Old Norse Óslo (mention)

← Old Norse Áslo (mention)

← Old Norse áss (mention)

→ Norwegian Bokmål Oslofjorden (affix)

→ Dutch Oslo (borrowed)

→ Slovak Oslo (borrowed)