chicken out
phrasal verbchicken out (of something/of doing something)
- (informal)
to decide not to do something because you are afraid 因害怕而放弃；临阵退缩；胆怯 You’re not going to chicken out, are you? 你不会临阵退缩吧？ Kim put my name down for a sponsored parachute jump but I chickened out at the last moment. 金把我的名字写在赞助跳伞上，但我在最后一刻退缩了。