Antonyms for the word "unfactual" include "factual," "true," "accurate," "exact," and "correct." These words imply that the information provided is based on evidence, proven facts, and research. By contrast, "unfactual" suggests that the information provided is incorrect or fails to meet the basic standards of credibility, such as accuracy, reliability, and objectivity. The use of antonyms can be helpful in distinguishing between fact and fiction, truth and falsehood, and accuracy and misrepresentation, and can contribute to clear thinking, informed decision-making, and effective communication.