When someone or something is disfigured, the look they used to have has been ruined. We use it most about a person's face or body: a fire, a deep cut, an illness, or someone hurting them on purpose can leave them disfigured. You will also hear it about things that are not people — a statue with an arm torn off, a wall with ugly holes, a pretty street spoiled by a huge new building. News writers and doctors use this word; it feels serious. It is not a joke, and it is not a word for everyday chat about clothes or hair. Though actually, kind people are careful with it around a living person, because it can sound as if the person is only the damaged look. Many speakers would rather name the burn or the scar, or wait and use the words the person uses for themselves. It does not mean “born looking ordinary” or “wearing ugly clothes.” A plain face is not a disfigured face. Disfigured means the first look was broken.