Factualness, the quality of being based on facts rather than speculation or opinion, can be expressed using several synonyms. One such synonym is accuracy, which denotes the degree to which a statement or claim corresponds with reality. Another synonym for factualness is truthfulness, which suggests the adherence to truth and honesty in conveying information. Reliability is another synonym that emphasizes the trustworthiness and consistency of the information presented. The term veracity, meaning conformity with facts, is another apt synonym for factualness. Using these synonyms helps to articulate the importance of factualness in presenting information, whether in academic research, journalism, or other fields.