What does a guy mean if he calls a woman a firebrand?

If a guy calls a woman a "firebrand," he typically means she is passionate, outspoken, and has a strong, assertive personality. This term often implies that she is not afraid to challenge the status quo or advocate for her beliefs. It can be seen as a compliment, highlighting her intensity and ability to inspire or provoke change. However, the context in which it is used can affect its connotation.