You coward! What are you afraid of?

你这胆小鬼！你怕什么呢？

《牛津词典》

Do as I tell you, you coward!

就照我说的做，你这个胆小鬼！

youdao

Scarlett: : Why don't you say it, you coward!

斯佳丽：你这胆小鬼，你为什么不明说。

youdao

The kind of battle I've been describing to you, a nice flat field, two armies coming at each other, there's not much you can do in the way of trickery, and so you can take a high tone and say, anybody who fights any other way is a no good coward.

我向你们描述的这种战争,土地平坦开阔,两军对垒,没有多大机会使用奸计,所以你能大声地说,谁在战争中使奸就是胆小的懦夫

耶鲁公开课 - 古希腊历史简介课程节选

In the military great courage is often referred to as heroism, while a lack of courage will brand you a coward.

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If you're a manager and let things fester, staffers will see you as a coward, an incompetent or perhaps both.

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But remember that once you go, you will be forever known as the coward who ran away, he added shrewdly.

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