whiten

To whiten something usually means to make it white or whiter, or to bring back a cleaner, brighter look. You might whiten clothes with bleach, whiten teeth with a dental treatment, or whiten a surface in a photo edit. The idea is often that something has become dull, stained, yellow, or dark, and is being made lighter again.

The word can also describe a person or face becoming pale. Someone's face may whiten from fear, shock, illness, or sudden pain. So, in everyday use, "whiten" is mainly about becoming whiter in color, whether that happens on purpose or as a natural reaction.

The word "whiten" mainly means to make something white or whiter in color. In many cases, this means removing stains, yellowing, or dullness so that the thing looks cleaner and brighter. For example, you can whiten laundry with bleach, whiten teeth with a treatment, or whiten paper, walls, or digital images so they look lighter. The word often suggests a visible change toward a cleaner or paler white shade.

"Whiten" can also be used intransitively, especially about a face or skin. In that sense, it means to become pale or lose color because of fear, shock, illness, cold, or pain. A sentence like "His face whitened at the news" shows this use clearly. Here, the change is not about cleaning something, but about a person suddenly looking pale.

In modern English, the most common uses are these literal ones: making something whiter, or describing a face becoming pale. People sometimes confuse "whiten" with "whitewash," but "whitewash" is the word more often used for hiding faults or making bad actions seem acceptable. So, whether you are talking about clothes, teeth, images, or a face drained by fear, "whiten" is mostly about a shift toward white or a loss of color.