The most common and most likely answer to this crossword clue is the 10 letter word HALLELUJAH
I've seen this crossword clue in Independent
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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.
What does HALLELUJAH mean?
HALLELUJAH noun- A shout of “Hallelujah”.
- A song of praise to God; a musical composition based on the word "Hallelujah".
- (in the plural) General praise.
- To cry "hallelujah" in praise.
- An exclamation used in songs of praise or thanksgiving to God.
- A general expression of gratitude or adoration.