The word "steyest" is a rare archaic form of the word "steepest". It is pronounced as /ˈstiːɪst/ (stee-ist) using the International Phonetic Alphabet (IPA). The spelling of the word follows the standard pattern of constructing superlatives by adding -est to the end of an adjective. However, the word has fallen out of common usage and is typically only found in historical texts or poetry. It serves as a reminder of the evolution of language and how word usage can change over time.