Venturing guess refers to a statement or hypothesis that is made with some degree of uncertainty, based on intuition or incomplete knowledge. The antonyms of venturing guess would be words that denote a high degree of certainty, accuracy, or precision. These include terms such as fact, certainty, knowledge, truth, and accuracy. Rather than making a speculative guess, using these antonyms implies that the information presented is backed by evidence, research, or extensive experience. In contrast to a venturing guess, these antonyms suggest a higher level of reliability, and they are useful in situations where accurate information is essential.