This is the 3647th most frequent Portuguese word.
substituir
"Substituir" means "to replace" or "to substitute."
In this sentence, 'substituir' is used to indicate the action of replacing something that is no longer functional with another item.
Eu vou substituir a lâmpada que queimou.
I am going to replace the burnt-out lightbulb.
Here, 'substituir' implies the act of changing one person for another in a specific role or position.
O professor substituiu um aluno no papel principal da peça.
The teacher replaced a student in the main role of the play.
In this context, 'substituir' means to exchange one item for another, indicating a preference or improvement in the choice made.