The word "ultimate" refers to something that is the highest or greatest level or quality. There are several synonyms for "ultimate" that can be used depending on the context. Some examples include "supreme," "paramount," "highest," "utmost," "final," and "ultimate." These words have similar connotations and can be used interchangeably in certain situations. Additionally, some other synonyms for "ultimate" can include "penultimate" (second to last), "last," "definitive," and "conclusive." When describing something that is the absolute best or most essential, using synonyms for "ultimate" can help add emphasis or clarify the meaning.