Steamily is a word that is often used to describe a situation that is filled with hot, humid air or steam. However, there are several other words that can be used as synonyms for steamily. Some of these include: humidly, heavily, muggily, oppressively, stickily, swelteringly, and tropical. Each of these words provides a slightly different nuance and can be used in different contexts. For example, "heavily" might be used to describe air that is thick with moisture, while "muggily" might be used to describe a humid environment that feels uncomfortable. By knowing these synonyms, you can add variety and depth to your writing, while also conveying a specific mood or atmosphere.