Old Norse þéna

← German dienen (cognate)

← Proto-Indo-European *tekʷ- (root)

← Proto-Indo-European *tekʷ- (derived)

→ Danish tjene (mention)

→ Westrobothnian tjeen (inherited)

→ Norwegian Bokmål tjene (mention)

→ Norwegian Nynorsk tena (mention)

→ Norwegian Nynorsk tene (mention)

→ Old Norse þénari (suffix)

→ Old Norse þénasta (mention)

→ Swedish tjäna (mention)