a. 吵闹的, 喧嚣的, 骚乱的, 不守秩序的

Obstreperous \Ob*strep"er*ous\, a. [L. obstreperus, from
obstrepere to make a noise at; ob (see {Ob-}) + strepere to
make a noise.]
1. Attended by, or making, a loud and tumultuous noise;
clamorous; noisy; vociferous. ``The obstreperous city.''
--Wordsworth. ``Obstreperous approbation.'' --Addison.

Beating the air with their obstreperous beaks. --B.
Jonson.

2. Resistant to control; unruly.
[PJC] -- {Ob*strep"er*ous*ly}, adv. --
{Ob*strep"er*ous*ness}, n.