get cold feet
US /ɡɛt koʊld fiːt/
UK /ɡɛt koʊld fiːt/

1.
chùn bước, sợ hãi
to suddenly become too frightened to do something you had planned to do
:
•
He was going to ask her to marry him, but he got cold feet at the last minute.
Anh ấy định cầu hôn cô ấy, nhưng anh ấy chùn bước vào phút cuối.
•
I was going to try bungee jumping, but I got cold feet when I saw the height.
Tôi định thử nhảy bungee, nhưng tôi chùn bước khi nhìn thấy độ cao.