Asphyxiate/əsˈfɪksieɪt/ Definition 1 of 2Pro Tip 1/3Severe Connotation Indicates a serious, often fatal situation, usually an emergency or accident. The miners were asphyxiated after the shaft caved in. Pro Tip 2/3Not Always Death Can result in death, but may also mean nearly suffocated or in danger of suffocating. He almost asphyxiated on a piece of candy. Pro Tip 3/3External Force Implies an external cause or object is preventing breathing. She was asphyxiated by the malfunctioning gas heater.