This is the 99th most frequent Portuguese word.
tudo
"Everything."
In this sentence, 'tudo' means 'everything,' referring to the total state or situation surrounding the day.
Tudo está tranquilo hoje.
Everything is calm today.
Here, 'tudo' also means 'everything,' but it is used in the context of all the details about a specific topic—her trip.
Ela me contou tudo sobre a viagem.
She told me everything about the trip.
In this expression, 'tudo' means 'everything,' representing all the aspects or efforts for which the gratitude is expressed.