PHRASAL VERB (由于害怕)退出,临阵退缩 If someone chickens out of something they were intending to do, they decide not to do it because they are afraid. (由于害怕)退出,临阵退缩 [informal]
His mother complains that he makes excuses to chicken out of family occasions such as weddings. [VERBPREP. + of]
他妈妈抱怨他找借口躲避家庭聚会,如婚礼之类的。
I had never ridden on a motorcycle before. But it was too late to chicken out.