surprisingly and unceremoniously brusque in manner; "an abrupt reply"
exceedingly sudden and unexpected; "came to an abrupt stop"; "an abrupt change in the weather"
extremely steep; "an abrupt canyon"; "the precipitous rapids of the upper river"; "the precipitous hills of Chinese paintings"; "a sharp drop" 同义词:precipitous, sharp,
marked by sudden changes in subject and sharp transitions; "abrupt prose" 同义词:disconnected,