The most common and most likely answer to this crossword clue is the 11 letter word MISCARRIAGE
M
I
S
C
A
R
R
I
A
G
E
Buddy explains!
The straight part
We know that "losing child" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case losing child = miscarriage.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 MISCARRIAGE mean?
MISCARRIAGE noun- A failure; a mistake or error.
- The spontaneous natural termination of a pregnancy, especially before it is viable; the fatal expulsion of a foetus from the womb before term.