euthanasia

noun

eu·​tha·​na·​sia ˌyü-thə-ˈnā-zh(ē-)ə How to pronounce euthanasia (audio)
Synonyms of euthanasia
: 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.
Investigators also discovered 661 dog collars in a barn area where authorities believe euthanasia activity may have occurred, the sheriff said. Thao Nguyen, USA Today, 30 June 2026 The statement also described Miranda’s Rescue as a no-kill shelter, meaning animals are not euthanized simply to free up space, but Miranda acknowledged that euthanasia is sometimes necessary. Doha Madani, NBC news, 28 June 2026 Bud, Dew Drop and Bloom were brought in to the training center by Wags and Walks, a non-profit which works to reduce euthanasia in local shelters and encourage the adoption of rescue dogs. Adam Crafton, New York Times, 25 June 2026 At the time, it was expected that there would be five to 10 cases of euthanasia involving children each year. Vanessa Etienne, PEOPLE, 23 June 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 5 Jul. 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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