The word "by" has many synonyms depending on its usage. As a preposition, it can be replaced with "through," "via," "along," or "past." As an adverb, "by" can be replaced with "next," "near," or "close." When used to indicate a deadline, it can be replaced with "before." As a means of indicating a certain method or manner, it can be replaced with "using," "utilizing," or "employing." Additionally, "by" can be replaced with words such as "beside," "aside," or "nearby" to indicate proximity. The vast range of synonyms for "by" showcases the versatility of the English language and demonstrates the importance of context when choosing the most appropriate word.