←
Proto-Germanic *aukaną (inherited)
→
Old English eacan (cognate)
→
Westrobothnian auk (inherited)
→
Old Swedish øka (inherited)
→
Icelandic auka (inherited)
→
Norwegian Bokmål øke (derived)
→
Norwegian Bokmål auke (derived)
→
Norwegian Nynorsk auka (inherited)
→
Norwegian Nynorsk auke (derived)
→
Old Saxon okan (cognate)
→
Swedish öka (inherited)