MEANING: adjective: Noisy or unruly.
ETYMOLOGY: From Latin obstreperus (clamorous), from ob- (against) + strepere (to make a noise).
USAGE: "One email informs me of a friend's trepidation at having to undergo a stress test as recommended by her physician. And she is not referring to the stress associated with the presence of recalcitrant children and an obstreperous spouse." Vanaja Rao; That Sick Feeling; Gulf News (United Arab Emirates); Feb 5, 2009.