The term "most eristical" implies someone who is argumentative and loves to debate. There are several synonyms for this word that can be used to describe a person who is highly opinionated and enjoys intellectual discussion. Some of the words that come to mind include contentious, combative, disputatious, polemical, confrontational, and argumentative. These words convey a sense of lively, spirited discourse and suggest someone who is not afraid to challenge others and defend their own beliefs. Whether in a formal setting or in casual conversation, someone described as eristical will be known for their love of debate and their willingness to engage with others.