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

1.
chùn bước, nhát gan, sợ hãi
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.
Tôi định thử nhảy bungee, nhưng tôi đã chùn bước vào phút cuối.
•
He was going to ask her out, but he chickened out.
Anh ấy định rủ cô ấy đi chơi, nhưng anh ấy đã chùn bước.