Swedish trött

← Old English ðrīetan (cognate)

← Danish træt (cognate)

← Proto-Germanic *þreutaną (inherited)

← Old Danish thræt (cognate)

← Old Swedish þrøtter (inherited)

← Old Swedish þrøta (mention)

← Old Swedish þrȳta (mention)

← Proto-Indo-European *trewd- (inherited)

← Old Norse þreyttr (cognate)

← Old Norse þreyta (cognate)

← Old Norse þrjóta (inherited)

→ Swedish led (link)

→ Swedish tröttna (suffix)