[ob.strep.er.ous] adj [L obstreperus, fr. obstrepere to clamor against, fr. ob- against + strepere to make a noise] (ca. 1600) 1: marked by unruly or aggressive noisiness: clamorous "~ merriment"
2: stubbornly resistant to control: unruly syn see vociferous -- ob.strep.er.ous.ly adv -- ob.strep.er.ous.ness n