The word "brindlest" is a superlative form of the adjective "brindled", which means having a brownish or tawny color streaked with other darker colors. The spelling "brindlest" is pronounced /ˈbrɪndəlst/ (BRIN-duhlst) using the International Phonetic Alphabet (IPA). It is formed by adding the suffix "-est" to "brindled", indicating that it is the most brindled, or the maximum amount of brindling. While not the most common word, "brindlest" can be used to describe the fur of certain animals, such as cats or horses.