"Vứt đi" is mean throw it away. If use like this words is meant : when you want disparage anything because it have bad quality, need throw it away. But, If say only "vứt đi" is words imperative. Vứt is throw - Verb. If say about korea is meant " 버리세요". V+ đi = V+ (으)세요. Đi đi= 가세요. Thử đi/ nhìn đi = 보세요.

"Vứt đi" means throw away. It's no longer to use. Ex: out of date Someone use "vứt đi" for describing a person, it means that a bad person, useless person