The most common and most likely answer to this crossword clue is the 9 letter word BREATHING
I've seen this crossword clue in The Daily Telegraph
B
R
E
A
T
H
I
N
G
More clues leading to the result BREATHING
- Evidently living wage perhaps getting cut? Then object
- Instinctive activity to do with washing clothes
- Inspiring engineers into swimming
- It’s inspiring swimming round reef occasionally
- Live around winter’s end, a creature’s living
- ‘Living‘ undergarment clothing sweetheart’s body
- Sighing, supporter accepts England weakness
- The Gibran novel is inspiring
- Is concerned with taking part in swimming
Buddy explains!

The straight part
We know that "Sighing" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sighing = breathing.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 BREATHING mean?
BREATHING verb- To draw air into (inhale), and expel air from (exhale), the lungs in order to extract oxygen and excrete waste gases.
- To take in needed gases and expel waste gases in a similar way.
- To inhale (a gas) to sustain life.
- To live.
- To draw something into the lungs.
- To expel air from the lungs, exhale.
- To exhale or expel (something) in the manner of breath.
- To give an impression of, to exude.
- To whisper quietly.
- To pass like breath; noiselessly or gently; to emanate; to blow gently.
- To exchange gases with the environment.
- To rest; to stop and catch one's breath.
- To stop, to give (a horse) an opportunity to catch its breath.
- To exercise; to tire by brisk exercise.
- To passionately devote much of one's life to (an activity, etc.).
- The act of respiration; a single instance of this.
- A diacritical mark indicating aspiration or lack thereof.
- Time to recover one's breath; hence, a delay, a spell of time.
- Any gentle influence or operation; inspiration.
- Aspiration; secret prayer.