This is the 503rd most frequent Portuguese word.
portanto
"Portanto" means "therefore" or "thus" in English.
In this sentence, 'portanto' is used as an introductory adverb providing an explanation or consequence of the preceding discussion.
Portanto, o evento será adiado para a próxima semana.
Thus, the event will be postponed to next week.
In this sentence, 'portanto' is used to indicate a conclusion or a result of the condition stated beforehand.
Estava muito cansado, portanto decidi descansar um pouco.
I was very tired, therefore I decided to rest a bit.
Here, 'portanto' links the cause (a clear explanation) to its consequence (everyone understood easily).