Few teachers have been spared the problem of an 'obstreperous' pupil in the class.
Few teachers have been spared the problem of an 'obstreperous' pupil in the class.
Explanation
Obstreperous ایسا شخص جو شور مچانے والا، ضدی، یا قابو میں نہ آنے والا ہو۔
Unruly "بے قابو" یا "نظم و ضبط سے باہر"۔