The most common and most likely answer to this crossword clue is the 10 letter word FLOUNDERED
I've seen this crossword clue in Independent
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More clues leading to the result FLOUNDERED
Buddy explains!
The straight part
We know that "Struggled" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case struggled = floundered.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 FLOUNDERED mean?
FLOUNDERED verb- To flop around as a fish out of water.
- To make clumsy attempts to move or regain one's balance.
- To act clumsily or confused; to struggle or be flustered.
- To be in serious difficulty.