The Clue Piece of mischief
The Answer ANTIC
The word "antic" refers to a playful or silly act, which often involves some mischief. Antics are usually light-hearted and can make people laugh. This fits perfectly with the clue "piece of mischief," as it suggests a small act that is fun or mischievous in nature. Overall, "antic" captures the spirit of playful troublemaking.