When writing an essay or argumentative piece, it's important to express your thoughts and ideas in a clear and concise manner. However, repeating the same phrases and words can become monotonous and boring. One phrase that is often overused is "on the one hand." Fortunately, there are many synonyms that can be used interchangeably to make your writing more interesting and engaging. Some of these synonyms include "to begin with," "firstly," "initially," and "primarily." Each of these synonyms conveys the same message as "on the one hand" but adds an element of variety to your writing style. Remember, it's important to mix up your words and phrases to keep your readers engaged.