The most common and most likely answer to this crossword clue is the 5 letter word YOBBO
I've seen this crossword clue in The Guardian
Y
O
B
B
O
More clues leading to the result YOBBO
- Surly youth to come and go with Boys Brigade for a year
- Contrary lad with personal problem?
- Flipping East End pastime includes nothing rough
- Lout‘s blog oddly coming after setting up youth
- Modern 25d knocks over child with hygiene issue
- Youngster coming back with personal hygiene problem is a lout
- “Lout Youth of broken Britain” opine leaders
- Lout starting to bash young man over nothing
- Tough bloke close to honey bees going in circles
- Lout‘s two children almost going head-to-head
Buddy explains!

The straight part
We know that "rough" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case rough = yobbo.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 YOBBO mean?
YOBBO noun- A yob.