The most common and most likely answer to this crossword clue is the 7 letter word DEPRESS
I've seen this crossword clue in The Times
D
E
P
R
E
S
S
More clues leading to the result DEPRESS
- Put down duke, a powerful ruler, to be unmarried
- Bring down news boss backing the media
- Street-wise way of saying the newspapers are getting people low
- Regularly tempt to cut garment lower
- Push to remove the hacks
- Demoralise the papers after case of defence
- Papers on low exam grades cause unhappiness
- Make blue costume worn by English princess, initially
- Lower by half dear newspapers
- Discourage editor returning to journalism
Buddy explains!

The straight part
We know that "Put down" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case put down = depress.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 DEPRESS mean?
DEPRESS verb- To press down.
- To make depressed, sad or bored.
- To cause a depression or a decrease in parts of the economy.
- To bring down or humble; to abase (pride, etc.).
- To reduce (an equation) in a lower degree.