What does it mean to be a bachelor?

Besides being single, bachelor also means "rogue", "cheeky", "shameless" and "smooth" in some places in the north.

In the past, people who were too poor in the family could not get a wife, so they were called bachelors. It is such people who are more unscrupulous and more capable of doing things that are out of line or not, that is, people often say that "barefoot people are not afraid to wear shoes."

It means "to be single"