The word Shewer is a noun that refers to a person who administers or oversees an oath or a pledge. However, there are several synonyms that can be used in place of this word to convey a similar meaning. These synonyms include 'swearer,' 'affirmer,' 'oath-taker,' 'pledger,' 'assurer,' 'promiser' and 'guarantor.' These words differ in their nuance and provide a broader range of description about the person who takes an oath or makes a promise. By using such synonyms, the writer can add variety and depth to their language while ensuring that their message is conveyed clearly and effectively.