The term "most parsonical" is quite specific and may not have many synonyms. However, similar words that can be used in place of it include "preachy," "moralistic," "sermonizing," and "holier-than-thou." These words are often used to describe someone who is overly focused on preaching or teaching a particular belief system or moral code to others, often in a judgmental or self-righteous way. While the term "most parsonical" may be unique in its connotation, these synonyms can provide a more universal way to describe someone with a similar personality or behavior.