Word of the Week: obstreperous (ŏb-STRĔP-ər-əs) Definition (Adjective) Noisily or aggressively resisting control, advice, etc.; turbulent, unruly; aggressive, argumentative, bad-tempered. In Context "Perhaps she realized that however obstreperous her protest at the White House, she would never gain a significant hearing among the federal politicians in Washington, D.C., where she had lived for over a year." Fran Grace, Carry A. Nation: Retelling the Life, 2001.