Achromatics refer to objects or colors that are devoid of any hue. Synonymous terms for achromatics include colorless, neutral, gray, monochromatic, and achromatic. Colorless implies a complete absence of color and can be used in reference to transparent or translucent objects. Neutral describes colors that lack warmth or coolness, such as beige or taupe. Gray can refer to an absence of color or a blend of black and white. Monochromatic refers to a single color in varying shades and tones. Achromatic is a scientific term that specifically means without color or hue. All of these synonyms can be used to describe objects that lack any noticeable coloration.