The most common and most likely answer to this crossword clue is the 8 letter word PLANGENT
I've seen this crossword clue in The Guardian
P
L
A
N
G
E
N
T
More clues leading to the result PLANGENT
- Information secured by factory – it makes us mournful
- Resonant scheme supported by man
- Supporting scheme, man becomes loud and mournful
- Noisy fellow supporting idea
- Dope smuggled by stooge with loud voice
- Noisy fellow supporting scheme
- Melancholy, mean man
- Proposition toff with mournful tone
- … short play, good in points and theatre’s booming
- Ringing covert agent to receive information
Buddy explains!
The straight part
We know that "with mournful tone" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case with mournful tone = plangent.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 PLANGENT mean?
PLANGENT adjective- Having a loud, mournful sound.
- Beating, dashing, as waves.