The most common and most likely answer to this crossword clue is the 4 plus 4 letter word PIPE DOWN
P
I
P
E
D
O
W
N
More clues leading to the result PIPE DOWN
- Sing bass? Shut up!
- Constant exercises put on to keep wife quiet
- Sewer underground? Shut it
- Tube out of action? Hush up!
- Be quiet in particular after defeat by editor
- Shut up something that descends to the drains?
- Wrap up piece of plumbing emerging from bathroom?
- Keep quiet, depressed after tweet
- Quiet conduit dictators initially have
- Philip and Edward have to stop talking
Buddy explains!

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.