mischievous

英['mɪstʃɪvəs] 美['mɪstʃɪvəs]

1. naughtily or annoyingly playful;

"teasing and worrying with impish laughter"

2. badly behaved;

"he was saucy and mischievous in school"

"a naughty boy"

3. deliberately causing harm or damage;

"mischievous rumors and falsehoods"