Asphyxiates refers to the act of suffocating or choking someone to death. There are a variety of synonyms that can be used in place of asphyxiates, including smother, strangle, choke, suffocate, and stifle. These words each indicate different ways that someone may be deprived of breath, from being smothered by a pillow to having their airway closed off by external pressure. Asphyxiates can also be used more broadly to refer to situations or events that cause air to become scarce, such as fires or gas leaks, and in these cases, other synonyms like suffocate or smother may be more appropriate.