Sic is a Latin adverb which in Portuguese means “thus”, “thus", “thus” “exactly this way" and "anyway”.
The word "sic" is written in parentheses, after a third-party word or phrase, when they present some error in the way they are written, or that seem strange, but that's how the author wrote.
Sic is used in several countries and has the same purpose, that is, to show the reader that it was "exactly" that the word or phrase was written by the author.
To indicate to the reader that even knowing that the original text is wrong, or sounds strange, it can be transcribed, followed by the word (sic). When the same error is repeated in several citations of a text, it is used (sic passim), always in parentheses, which means (this is how it is everywhere).
In the academic world, the verb “sicar” has already appeared, to indicate that the observation with the word (sic) will or will not be done. Ex.: I don't have the courage to be this very important author.
The Latin phrase “Sancter Pater, sic transit gloria mundi” (Holy Father, so the glory of the world passes) was uttered three times up to 1963 in the possession of a new Pope.