Old Norse hrukka

← Proto-Germanic *hrunkǭ (inherited)

→ English ruck (derived)

→ English frounce (cognate)

→ Faroese rukka (inherited)

→ French froncer (cognate)

→ French fronce (cognate)

→ Icelandic hrukka (inherited)

→ Norwegian Bokmål rynke (mention)

→ Norwegian Nynorsk rynke (mention)