He was going to ask her but he got cold feet and said nothing.

他本来是想向她提出邀请的，可事到临头他却胆怯得什么也没有说。

《牛津词典》

Claire canceled the wedding. She got cold feet.

克莱儿取消婚礼，她临阵退缩。

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They later got cold feet and canceled the order.

他们后来临阵退缩，取消了订单。

youdao

Atari got cold feet, and dropped the idea -- and the game -- before completion.

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Immediately after, every distributor they had with any business sense got cold feet.

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After taking a look at PAL's books and labor problems, however, the two airlines got cold feet and withdrew their bids.

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