An abrupt change or action is very sudden, often in a way that is unpleasant.
Rosie's idyllic world came to an abrupt end when her parents' marriage broke up.
当罗茜的父母婚姻破裂后,她田园诗一般的世界骤然结束了。
Someone who is abrupt speaks in a rude, unfriendly way.
brusque
He was abrupt to the point of rudeness.
他唐突到了无礼的地步。