The most common and most likely answer to this crossword clue is the 15 letter word ROUGHÂ ANDÂ READY
I've seen this crossword clue in The Guardian
R
O
U
G
H
Â
A
N
D
Â
R
E
A
D
Y
Buddy explains!

The straight part
We know that "Crude" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case crude = rough and ready.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 ROUGHÂ ANDÂ READY mean?
ROUGHÂ ANDÂ READY adjective- (often hyphenated when placed immediately before the modified noun) Crude or unpolished, but still fit for use; good enough.