The word "paller" is a verb that means to become pale or lose color. There are several synonyms for this word, including blanch, fade, whiten, bleach, and drain. These words can be used interchangeably, depending on the context and the intended meaning of the sentence. Blanch is typically used to describe a sudden loss of color, while fade can be used to refer to a gradual loss of color over time. Whiten implies a total lack of color, while bleach suggests the use of a chemical to remove color. Drain is often used to describe a person's appearance when they are tired or sick.