Simple past tense and past participle of smother.(verb)
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Use "smothered" in a sentence
"(Dashing the glass violently from her hand to the floor and speaking in smothered voice.)"
"Anders Eriksson's slap shot squeaked through the pads of Bryzgalov and was almost across the line when Ed Jovanovski cleared it away and right to Reinprecht, who ended up heading the other direction on a 150-foot breakaway only to have his shot from close-in smothered by Kiprusoff."
"Nunn caught an 8-yarder but lost the ball as he was going down, and Griffin smothered it to give Texas a final chance."