adj. Noisily unruly or defiant: The restaurant owner ejected the obstreperous customer. [From Latin obstreperus, noisy, from obstrepere, to make a noise against : ob-, against; see OB- + strepere, to make a noise (of imitative origin).] ob·streper·ous·ly adv. ob·streper·ous·ness n. |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.