wimp out
phrasal verb with wimp verb uk/wɪmp/ us/wɪmp/
informal
因恐惧而不做…
to decide not to do something because you are too frightened
I was going to do a parachute jump but I wimped out at the last minute. 我打算去跳伞，但到了最后一刻我还是吓得没敢跳。
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