Most Conjectured is a phrase that implies uncertainty, speculation, and assumption. Antonyms for the word "conjectured" would involve words that denote certainty, fact, and truth. Some possible antonyms could include "proven," "verified," "confirmed," "established," "definite," "certain," "undeniable," "unquestionable," "indisputable," or "factual." These words carry a sense of authority and credibility that contradict the doubt and uncertainty associated with conjecture. While conjecture has its place in exploring new ideas and possibilities, relying on verified and established information can provide a more solid foundation for decision-making and thought processes.