Answer: perishing

AnswerCrossword Clue
PERISHINGBecoming extinct.
PERISHINGBiting the dust
perishingSuffer complete ruin or destruction
perishingPERISH, to die (to cut with a material shaping device)
perishing(of rubber, a foodstuff, or other organic substance) Lose its normal qualities; rot or decay
perishingSuffer death, typically in a violent, sudden, or untimely way