Smoldering remains is a phrase commonly used to describe the aftermath of a fire or explosion. However, there are many synonyms that can be used to describe the same thing. Some other options include burning remnants, charred ashes, glowing embers, and fiery debris. Other available words can include residual flames, smoking debris, blackened rubble, and molten wreckage. These synonyms can be used in various contexts to describe the same idea of destruction and devastation caused by a fire. Overall, there are many different ways to describe the haunting image of smoldering remains, each one giving a slightly different perspective on the aftermath of a catastrophic event.