This is the 8721st most frequent Portuguese word.
alertar
To warn or alert.
The verb "alertar" is used here in its primary sense, to notify or warn someone about a potential issue or risk.
Eu preciso alertar você sobre o perigo.
I need to alert you about the danger.
"Alertar" is utilized as a direct action where someone provides important information to others for their awareness.
O professor alertou os alunos sobre as mudanças nas regras.
The teacher alerted the students about the changes in the rules.
"Alertar" is applied in a formal context, indicating that informing or notifying responsible authorities was a significant action to address an issue.