The most common and most likely answer to this crossword clue is the 4 plus 3 plus 8 letter word LIKE THE CLAPPERS
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More clues leading to the result LIKE THE CLAPPERS
- Take to appreciative fans in a hurry
- Very quickly approve of appreciative audience?
- Quickly appreciate those showing appreciation
- Quick to appreciate those applauding?
- Quickly appreciate positive audience reaction
- Quickly enjoy appreciative audience
- Very rapidly appreciate those giving hand
- Fast to appreciate those who applaud
- Fast, as crowd on feet?
Buddy explains!

The straight part
We know that "Very rapidly" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case very rapidly = like the clappers.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.