Of someone or something that has died as a result of suffocation.(adjective)
Simple past tense and past participle of suffocate.(verb)
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Use "suffocated" in a sentence
"I wouldn't have cared because I felt bad for her, but I almost suffocated from the smell."
"Exposure to methane gas led to the deaths of four family members and a farmhand, but whether they suffocated from the fumes or drowned in 18 inches of liquefied cow manure may never be known, authorities said."
"A worker told me that some animals suffocated from the weight of their paunch on their lungs before they could be safely approached."