Carline is a term that may not be very common nowadays, but it has multiple synonyms that can be used in its place. One common synonym for carline is a "harridan," which refers to a strict, bossy woman. "Battle-axe" is also another synonym that means the same thing in this context. Alternatively, you can use "old hen" or "old biddy" to describe an older, stern woman. You could also use "crone," which is a more archaic term meaning an unpleasant or witchlike older woman. Ultimately, there are many ways to describe a person with a carline-like demeanor, but understanding your audience and context is vital to using the right synonym.