This is the 5699th most frequent Portuguese word.
alter
"Alter" in Portuguese means "to change" or "to modify."
Here, 'alterar' is used to indicate making modifications to something previously decided.
Eu vou alterar os planos para amanhã.
I will alter the plans for tomorrow.
In this instance, 'alterar' refers to unauthorized changes or tampering with something.
Ela percebeu que alguém havia alterado os documentos no arquivo.
She realized that someone had altered the documents in the file archive.
Here, 'alterar' is used to describe the user's ability to customize or adjust options.