The word "first" has many synonyms that express a range of meanings. Some of the synonyms for the word "first" include: initial, primary, inaugural, principal, foremost, premier, headmost, topmost, chief, leading, and initial. These words can be used to describe a variety of situations, such as the first in a sequence, the first step in a process, or the most important or prominent aspect of a situation. Using synonyms for "first" can help to add variety and interest to your writing, and can also help to convey a more precise or nuanced meaning.