chicken out
US /ˈtʃɪk.ɪn aʊt/
UK /ˈtʃɪk.ɪn aʊt/

1.
تراجع, جبن, خاف
to decide not to do something because you are too frightened
:
•
I was going to try bungee jumping, but I chickened out at the last minute.
كنت سأجرب القفز بالحبال، لكنني تراجعت في اللحظة الأخيرة.
•
He was going to ask her out, but he chickened out.
كان سيطلب منها الخروج، لكنه تراجع.