The most common and most likely answer to this crossword clue is the 5 letter word ECLAT
I've seen this crossword clue in The Times
E
C
L
A
T
More clues leading to the result ECLAT
- Ostentation comes initially in story, looking back
- Brilliant display of yarn wound around cape
- Small volume to devour is without ostentation
- Chapter in story sent up brilliant success
- Report written up about century, brilliant effort
- Great success, putting chapter into back story
- Chapter in revolutionary story bringing conspicuous success
- Acclaim legend about fencing clubs
- Celebrity shown up by brutal censors
- Brilliance of recital, cellist making a comeback
Buddy explains!

The straight part
We know that "Acclaim" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case acclaim = eclat.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 ECLAT mean?
ECLAT noun- A brilliant or successful effect; brilliance of success or effort; splendor; brilliant show; striking effect; glory; renown.