Being wise is an essential trait that helps people make sound judgments and decisions. There are various synonyms that can be used in place of the phrase 'be wise someone.' For instance, one can use the term 'be intelligent' to encourage someone to use their rational thinking and acquire knowledge before making any decisions. The phrase 'be astute' can also be used to imply the need to be observant and sharp-minded while dealing with life's complexities. Additionally, 'be sensible' is one such synonym that emphasizes the importance of being practical and level-headed in one's decision-making. Whether it is being wise, intelligent, astute, or sensible, these synonyms all indicate the need for sound judgment, critical thinking, and insightful decision-making.