Stifle

erdrücken

(to make (an animal or person) unconscious or cause (an animal or person) death by preventing breathing; smother, suffocate)

ersticken

(to make (an animal or person) unconscious or cause (an animal or person) death by preventing breathing; smother, suffocate)

ersticken

(to die of suffocation)

unterdrücken

(to prevent (a breath, cough, or cry, or the voice, etc.) from being released from the throat)

unterdrücken

(to keep in, hold back, or repress (something))