The word "finished" can be replaced by various synonyms to enhance the vocabulary in writing. Some suitable alternatives include completed, ended, concluded, finalized, accomplished, wrapped up, terminated, and fulfilled. Each of these words has its unique meanings and can be used to describe different scenarios. For instance, completed can be used to describe a task that has been successfully undertaken, whereas terminated can be used to describe something that has come to an abrupt end. Using synonyms helps to avoid repetition, making the text more engaging and diverse. Therefore, it is essential to have a wide range of synonyms for "finished" and use them judiciously in writing.