Simple Definition of mercy killing

from our Learner's Dictionary

mercy killing

noun

plural mercy killings
: the killing of someone who is very sick or injured in order to prevent any further suffering
Some called her death a mercy killing.
He is opposed to mercy killing. [=euthanasia]

Cite this Entry

“Mercy killing.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/mercy%20killing. Accessed 19 Jun. 2026.

More from Merriam-Webster on mercy killing

More from Merriam-Webster