←
Proto-Germanic *ansuz (derived)
←
Proto-Indo-European *h₂énsus (derived)
←
Proto-Indo-European *h₂ems- (derived)
←
Proto-Indo-European *lewk- (mention)
←
Norwegian Oslo (borrowed)
←
Old Norse Ósló (derived)
←
Old Norse Óslo (mention)
←
Old Norse Áslo (mention)
←
Old Norse áss (derived)
→
Japanese オスロ (borrowed)