The word "tannish" is an adjective that refers to a light brown color that resembles tan. It is often used to describe skin tones, fabrics, and natural objects like sand, rocks, and wood. There are several synonyms for the word "tannish", including beige, fawn, khaki, biscuit, ecru, camel, buff, and oatmeal. These words can be used interchangeably to describe shades of brown that are light, muted, and neutral. When selecting a synonym for "tannish", it is important to consider the context in which it will be used and the particular shade of brown being described.