"Drubbing" Natural Recordings by Native Speakers
A drubbing is a decisive and often humiliating defeat or beating, often specified by a particular margin (e.g. "The team received a drubbing from their opponents, losing 10-0"). It can also refer to a thorough and comprehensive criticism or rebuking.
Drowsing refers to the act of dozing or nodding off to sleep, often in a relaxed or idle state. It can also describe a state of being half-asleep, halfway between being awake and fully asleep.