obstreperous

"You must do your homework before you can watch television."

"The children were boisterous on the playground, running and shouting with excitement. "

"The scientists repeated the experiment in order to confirm the result."

"The marketplace was tumultuous with vendors shouting prices and customers haggling loudly. "

"The teacher called Sarah a disobedient because she kept talking during the lesson. "

"With possessive: "My son's requests at the toy store are often ignored." Without possessive: "The librarian politely declined all requests on her for help with the computer because she was busy." "

"The student was a strong resistant, leading the group in their peaceful protest against the unfair school rules. "

"Go easy on him: he is but a child."

"He stubbornly refused to quit trying, even after failing 20 times."

"While searching the old library, I found a manuscript, its edges curiously charred, as though someone had attended it with a flame long ago. "

"I have the authority to penalise the staff in my department, but not the authority to sack them."

"The teacher was yelling at the students to be quiet. "