Search Result for "obstreperous": 
Wordnet 3.0

ADJECTIVE (2)

1. noisily and stubbornly defiant;
- Example: "obstreperous boys"

2. boisterously and noisily aggressive;
- Example: "kept up an obstreperous clamor"



The Collaborative International Dictionary of English v.0.48:

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.
      [1913 Webster]

            Beating the air with their obstreperous beaks. --B.
                                                  Jonson.
      [1913 Webster]

   2. Resistant to control; unruly.
      [PJC] -- Ob*strep"er*ous*ly, adv. --
      Ob*strep"er*ous*ness, n.
      [1913 Webster]


WordNet (r) 3.0 (2006):

obstreperous
    adj 1: noisily and stubbornly defiant; "obstreperous boys"
    2: boisterously and noisily aggressive; "kept up an obstreperous
       clamor"