The most common and most likely answer to this crossword clue is the 8 letter word WALTZING
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More clues leading to the result WALTZING
Buddy explains!

The straight part
We know that "Dancing" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dancing = waltzing.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 WALTZING mean?
WALTZING verb- To dance the waltz (with).
- (usually with in, into, around, etc.) To move briskly and unhesitatingly, especially in an inappropriately casual manner, or when unannounced or uninvited.
- To accomplish a task with little effort.
- To move with fanfare.
- The motion of one who waltzes.