Old Norse lykja

← Proto-Germanic *lukjaną (inherited)

← Proto-Germanic *lūkaną (mention)

← Proto-Indo-European *lewg- (inherited)

← Old Norse lúka (doublet)

→ Danish lukke (derived)

→ Icelandic lykja (inherited)

→ Norwegian Bokmål lukke (derived)

→ Norwegian Nynorsk lukke (derived)