The phrase "ever anon" is an archaic way of saying "often" or "frequently." If you're looking for a synonym for this outdated phrase, a few options might include "regularly," "repeatedly," "habitually," "consistently," or "persistently." Depending on the context, you might also consider using terms like "frequently," "commonly," "regularly," "usually," or "repeatedly." When choosing a synonym for "ever anon," it's important to consider the tone and style of the writing as well as the context in which the phrase is being used. By selecting the right synonym, you can help to enhance the clarity and effectiveness of your writing.