This is the 8107th most frequent Portuguese word.
sir
The Portuguese word "sir" does not exist; you may mean the English word "sir," which is a respectful title for a man.
In this sentence, 'senhor' is used as a polite form of address when speaking to a man, equivalent to 'sir' in English.
Senhor, poderia me ajudar com essa questão?
Sir, could you help me with this question?
Here, 'senhor' is used before a name to show respect and formality, akin to 'Mr.' in English.
A cerimônia será conduzida pelo senhor João.
The ceremony will be conducted by Mr. João.
In this usage, 'senhor' refers to a man, emphasizing age or respectfulness, similar to 'gentleman' or 'sir' in English.