Playful (6)
'playful' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for skittish that I've seen before include "Playful in coy manner, frisky" , "Frivolous" , "(Of horses) excessively lively" , "Frisky or playful (8)." , "Unpredictably excitable, horses say" .)
'playful' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for frisky that I've seen before include "Energetically playful" , "In high spirits" , "Frolicsome" , "Animated" , "High-spirited" .)