If you want to say that someone is unrefined or lacks class in Engpsh, you could say that they are "uncouth" or "vulgar". These words suggest that the person lacks manners or sophistication, and may behave in a crude or offensive way. You could also say that they are "low-class" or "low-bred", which suggests that they come from a less privileged or educated background. However, it's important to remember that these words can be hurtful and offensive, so use them with care.