serverest voice
Marked by or requiring strict adherence to rigorous standards or high principles: a severe code of behavior. 3. Stern or forbidding, as in manner or appearance: spoke in a severest voice.
Person 1: The bear came running to annoy her .
Person 2: The lady told him in her serverest voice to go back home
Person 2: The lady told him in her serverest voice to go back home