obstreperous

adj. 吵闹的，难管束的

observer, observing, obsess, obsessed, obsession, obsessional, obsessive, obsessively, obsolescence, obsolescent, obsolete, obssess, obstacle, obstacle race, obstetric, obstetrician, obstetrics, obstinacy, obstinate, obstinately, obstreperously, obstreperousness, obstruct, obstruction, obstructionism, obstructionist, obstructive, obstructively, obtain, obtainable, obtrude, obtrusion, obtrusive, obtrusive-ness, obtrusively, obtuse, obtuse angle, obtusely, obtuseness, obverse,