die by own hand
die by (one's) own hand
euphemism To commit suicide. Because she always seemed so happy and upbeat, I was shocked to hear that she had died by her own hand.
die by one's own hand
Euph. to commit suicide. Jane: I just heard that Bill died. I didn't know he was sick. Dan: He wasn't sick. He died by his own hand. She died at the age of fifty, by her own hand.