obstreperous

Adjective

obstreperous (comparative more obstreperous, superlative most obstreperous)

1. Attended by, or making, a loud and tumultuous noise; boisterous.
   • [O]n a clear still summer evening you may hear from the battery of New York the obstreperous peals of broad-mouthed laughter of the Dutch negroes at Communipaw.1809, Diedrich Knickerbocker [pseudonym; Washington Irving], chapter VII, in A History of New York, from the Beginning of the World to the End of the Dutch Dynasty. […], volume (please specify...
   • This disposition his subsequent life had not tended to change in any considerable degree, though increased knowledge, with much observation, and a little reading, had rendered the gaiety of the young man a very different thing to the obstreperous mirth of the boy.1838 (date written), L[etitia] E[lizabeth] L[andon], chapter XXII, in Lady Anne Granard; or, Keeping up Appearances. […], volume I, London: Henry Colburn, […], published 1842, →OCLC, page 277

   Synonyms:

   clamorous, loud, noisy, vociferous

2. Stubbornly defiant; disobedient; resistant to authority or control (whether in a noisy manner or not).
   • [W]e came to Whittingham. Thence to Newcastle, where an obstreperous horse retarded us for an hour at least.October 1827, Sir Walter Scott, The Journal of Sir Walter Scott
   • My dress was draggled, my hat had slipped back, and the kinks and curls of my obstreperous hair were something awful.1903, Lucy Maud Montgomery, “A Sandshore Wooing”, in Short Stories: 1902-1903

   Synonyms:

   recalcitrant, uncooperative, unruly, adamant, ardent, grim, untiring, bent on, bloody-minded, bullheaded