"Brindlest" is a term that is rarely used in everyday language, and therefore there are limited synonyms available to describe this word. However, the closest terms that we can use to refer to "brindlest" are "most brindled" or "swirliest." The term "most brindled" refers to the animal's coat or fur that has the most distinct stripes and colors that make up the brindle pattern. It is frequently used to describe dogs such as Boxers, Bulldogs, or Greyhounds. "Swirliest," on the other hand, refers to the swirling pattern of the animal's fur which creates a brindle effect. It is less commonly used but can be used interchangeably with brindlest.