D defs.my
Entry 2 senses Webster, 1913

Obstreperous

/əb-strĕp'-ẽr-əs/ · Ob·strep·er·ous · IPA /əbˈstɹɛpəɹəs/
01 a. Attended by, or making, a loud and tumultuous noise; clamorous; noisy; vociferous.
  1. 1.
    Attended by, or making, a loud and tumultuous noise; clamorous; noisy; vociferous.
    “Beating the air with their obstreperous beaks.” B. Jonson.
  2. 2.
    Resistant to control; unruly.