Playfully frivolous (8)

I believe the answer is:

skittish

(Other definitions for skittish that I've seen before include "Nervous; playful" , "Playful - lively - unpredictable" , "(Of horses) excessively lively" , "Frivolous" , "Playful in coy manner, frisky" .)

I've seen this clue in The Times.

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