The most common and most likely answer to this crossword clue is the 6 plus 4 letter word SECOND WIND
I've seen this crossword clue in The Guardian
S
E
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D
More clues leading to the result SECOND WIND
- Instant victory over Germany renewed strength
- Further snake shows renewed energy
- Time to set clock and get breath back
- Back bend sees another burst of energy
- Back victory with Germany’s renewed energy
- Support brass, for example, as requirement for renewed effort
- Renewed enthusiasm following victory by Democrat
- Support current recovery
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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.