To dehumanize someone is to treat them, or speak of them, as if they were not fully human — so they lose, or are denied, the good qualities we expect people to have: kindness, a face, a name, a say. You can dehumanize a person with violence, with rules that erase who they are, or with words that turn them into a type. The subject is usually a person, a group, or a system doing the treating; the object is the people being reduced. It is a formal, serious verb. Though actually, in everyday English some speakers use it for anything that feels cold ("this job dehumanizes you"), which is a milder, more personal stretch of the same idea. British spelling also allows dehumanise.

使人失去人性；去人性化