The most common and most likely answer to this crossword clue is the 5 letter word CRASS
I've seen this crossword clue in The Sunday Telegraph
C
R
A
S
S
More clues leading to the result CRASS
- Insensitive Charlie, right fool!
- Stupid, he manages to avoid collisions
- Stupid students swapping sides
- Insensitive type changing sides
- Insensitive Conservative – right fool!
- Grossly stupid councillor Trump’s behind
- I dropped out of grammar term being grossly stupid
- Stupid group of schoolchildren taking the wrong direction
- Credit fool with immense stupidity
- Excising even parts of carcasses can make one so insensitive
Buddy explains!

The straight part
We know that "Vulgar,/haracte" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case vulgar,/haracte = crass.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 CRASS mean?
CRASS adjective- Coarse; crude; unrefined or insensitive; lacking discrimination
- Materialistic
- Dense
- Lacking finesse; crude and obvious.