Old Norse þrǫngr

← Proto-Germanic *þrangwaz (inherited)

← Proto-Indo-European *trenkʷ- (root)

→ Faroese trongur (inherited)

→ Westrobothnian trang (inherited)

→ Icelandic þröngur (inherited)

→ Norwegian Bokmål trang (derived)

→ Norwegian Nynorsk trong (derived)

→ Old Norse þrøngsl (mention)

→ Old Norse þrǫngleikr (suffix)

→ Swedish trång (derived)