Cryptic crossword clue
Uncouth bride collapses, having drunk two litres 3-4

The most common and most likely answer to this crossword clue is the 8 letter word ILL-BRED

I've seen this crossword clue in The Times
I
L
L
-
B
R
E
D


Buddy explains!

The straight part
We know that "Uncouth" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case uncouth = ill-bred.
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 ILL-BRED mean?

ILL-BRED adjective
  1. Ill-mannered and unrefined because of a lack of upbringing or education
  2. (of animals) of bad breed

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