When it comes to describing the burning of something, especially wood or coal, the word "smoldered" is often used. However, there are a number of different synonyms that can be used to convey the same idea in a different way. For example, instead of "smoldered," one might use "glowed," "flickered," "burned slowly," or "simmered." Each of these words conveys a slightly different tone or level of intensity, depending on the context in which they are used. Whether describing a bonfire or a simmering pot of stew, choosing the right synonym can add depth and nuance to your writing.