Swedish tack

← Proto-Germanic *þankō (derived)

← Proto-Germanic *þankaz (mention)

← Old Norse þǫkk (derived)

→ English thank (cognate)

→ Finnish tattis (derived)

→ Icelandic takk (cognate)

→ Icelandic þökk (cognate)

→ Norwegian Bokmål takk (cognate)

→ Swedish tusen tack (mention)

→ Swedish tacka (link)

→ Swedish tacksam (suffix)

→ Swedish tacknämlig (suffix)