The phrase "most vicarial" can be replaced with several synonyms depending on the context in which it is used. Some possible synonyms are "highly representative," "nearly symbolic," "largely emblematic," "primarily figurative," or "mostly abstract." These words all convey the idea of something being representative or standing in for another thing. "Most vicarial" can also be replaced with "most surrogate," "most proxy," or "most deputy." These words suggest that something is acting in place of another thing or person. Overall, there are various synonyms for "most vicarial" that can help convey the intended meaning in different situations.