Silkiest is an adjective used to describe the smooth and soft texture of a material or surface. Synonyms for the word silkiest include terms like smoothest, softest, velvety, satin-like, lustrous, silky-smooth, and glossy. These words convey a similar sense of texture and are often used interchangeably when describing silky materials such as silk, satin, or velvet. Some other words that can be used as synonyms for silkiest to describe soft and smooth surfaces include sleek, supple, pliant, and malleable. These words are especially useful when describing the texture of materials like leather, rubber, or plastic.