euthanasia

noun

eu·​tha·​na·​sia ˌyü-thə-ˈnā-zh(ē-)ə How to pronounce euthanasia (audio)
Synonyms of euthanasianext
: the act or practice of killing or permitting the death of hopelessly sick or injured individuals (such as persons or domestic animals) in a relatively painless way for reasons of mercy
euthanasic adjective

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Where does euthanasia come from?

Euthanasia is a mass noun (or noncount noun), that is, a noun used only in the singular form.

The word comes from the Greek euthanatos, which means “easy death.” In English, euthanasia has been used in exactly this sense since the early seventeenth century, when Francis Bacon described the phenomenon as “after the fashion and semblance of a kindly & pleasant sleepe.” Nowadays, the word usually refers to the means of attaining such a death.

Examples of euthanasia in a Sentence

a physician who refuses to practice euthanasia
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
During the investigation, one mule was determined to be suffering to the extent that euthanasia was necessary and was carried out by the Moffat County Sheriff’s Office. Craig Daily Press, Denver Post, 18 May 2026 Garrido says that, sadly, the euthanasia rate is going to go up. Charlie De Mar, CBS News, 12 May 2026 Animal advocates have long pushed the city to legalize TNR, saying the practice reduces unwarranted litters, euthanasia and shelter intake while improving the health of feral cats. Claire Wang, Oc Register, 23 Apr. 2026 Nearly 300 chickens that faced possible euthanasia instead found permanent homes because multiple organizations across the country chose to collaborate rather than look away. Samantha Agate, Miami Herald, 22 Apr. 2026 See All Example Sentences for euthanasia

Word History

Etymology

Greek, easy death, from euthanatos, from eu- + thanatos death — more at thanatos

First Known Use

1605, in the meaning defined above

Time Traveler
The first known use of euthanasia was in 1605

Browse Nearby Words

Cite this Entry

“Euthanasia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/euthanasia. Accessed 20 May. 2026.

Kids Definition

euthanasia

noun
eu·​tha·​na·​sia ˌyü-thə-ˈnā-zh(ē-)ə How to pronounce euthanasia (audio)
: the act or practice of killing or permitting the death of hopelessly sick or injured persons or animals with as little pain as possible for reasons of mercy

called also mercy killing

Medical Definition

euthanasia

noun
eu·​tha·​na·​sia ˌyü-thə-ˈnā-zh(ē-)ə How to pronounce euthanasia (audio)
: the act or practice of causing or permitting the death of hopelessly sick or injured individuals (such as persons or domestic animals) in a relatively painless way for reasons of mercy

called also mercy killing

Legal Definition

euthanasia

noun
eu·​tha·​na·​sia ˌyü-thə-ˈnā-zhə How to pronounce euthanasia (audio)
: the act or practice of killing or permitting the death of hopelessly sick or injured persons in a relatively painless way for reasons of mercy

called also mercy killing

euthanasic adjective
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