why should you not call someone yellow in English: Calling someone yellow: cowardly We no longer use it anymore because of the history term original of this term is discriminatory pejorative: a way of expressing contempt or disapproval used as a adjective 1.spineless : lacking courage also means lacking moral strict Ex: he was too spineless to speak up against the unfair rules Ex: i don't wanna be spineless but it's hard to say sometimes not confrontational at all no spin : Ex:you have no spin serious world we can't call somebody spineless; 2.scarcity cat : a person who is easily frighten Ex:stop being such a scarity cat it's just a little thunder Ex:she's such a scarcity cat when it comes to horror movies 3.Chicken: Ex: are you a chicken? Ex:I'm not jumping over that fence I'm way too chicken Ex:I'm too big of a chicken Chicken out : decide not to do sth because you're afraid (idiom) Ex: she promised she'd speak in front of class but then she chickened out Role play: A: the hunted house opens at 8:00, are you ready? B:honestly i don't know I'm kinda of scared you know I'm a chicken about this stuff A:oh don't be such a scarcity cat i heard this one isn't bad at all B:i will go with you but i reserve the right to chicken out and not go inside A:absolutely not! you can't plan on being spineless you have to promise you'll come with me there's no way I'm doing this alone! B:OK whose the chicken now?