be yellow

be yellow

To be cowardly. I'm not surprised that Tom didn't come to the rally—he's too yellow to defend his beliefs in public. You don't care if you all think I'm yellow. There's no way I'm getting into a fight with someone! He acts like a tough guy, but he's actually really yellow when it comes to needles. He had to get a tetanus shot at work once, and the nurse practically had to sit on him to administer it!

See also: yellow

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