The spelling of the word "unchastest" may seem confusing, but it can be explained through its phonetic transcription /ənˈtʃeɪstəst/. The prefix "un-" means "not," and "chaste" represents purity or modesty. The suffix "-est" is added to show the superlative form of a noun or adjective. Therefore, "unchastest" means "the most impure or immodest." While this word is not commonly used in modern English, understanding its spelling can aid in interpreting older literature and poetry.