The word "prudent party man" can be described using many synonyms depending on the context. One can use adjectives such as cautious, careful, responsible, astute, rational, sensible, and wise to illustrate the qualities of a prudent party man. Words like prescient, judicious, shrewd, and sagacious can also be used to describe someone who is thoughtful and observant, and can be relied upon to make good choices. These traits make a person a valuable asset in any social gathering, as they bring a level head and level of maturity to the conversation. Ultimately, being a prudent party man requires a combination of intelligence, foresight, and common sense.