Icelandic það

← English that (cognate)

← Faroese tað (cognate)

← Proto-Germanic *þat (inherited)

← Proto-Indo-European *tód (inherited)

← Proto-Indo-European *só (mention)

← Old Norse þat (inherited)

← Swedish det (cognate)

→ English that (cognate)

→ Alemannic German s (cognate)

→ Icelandic Þ.s.s.á. (mention)

→ Icelandic það er ýmist of eða van (mention)