The most common and most likely answer to this crossword clue is the 10 letter word EUTHANASIA
I've seen this crossword clue in The Guardian
E
U
T
H
A
N
A
S
I
A
More clues leading to the result EUTHANASIA
- Helped end a hunt organised in European continent
- Auntie has a concoction that puts one to sleep
- European Union, as compared with China etc, produces a happy ending?
- The UN struggles to accept a group of countries making mercy killing
- Word of comparison between two continents — no rope for mercy killing
- Sick auntie has a release from suffering
- Auntie has a shocking service from Dignitas
Buddy explains!
The straight part
We know that "that puts one to sleep" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case that puts one to sleep = euthanasia.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does EUTHANASIA mean?
EUTHANASIA noun- The practice of intentionally and painlessly killing a human being or animal for humane reasons, especially in order to end great suffering or poor quality of life.
- An easy death, or the means to bring about such a death.