Out-guessing is a verb that refers to the act of predicting or anticipating the outcome of a situation or event. When we try to out-guess someone, we are often using our intuition, logic, and experience to come up with a hypothesis regarding what might happen next. Antonyms for the term out-guessing might include terms like underestimate, misjudge, misinterpret, overlook, or miscalculate. These words suggest that the person is not able to correctly guess or anticipate the outcome, and instead makes an incorrect assumption or guess. In essence, these antonyms are the opposite of out-guessing, as they imply a lack of confidence or accuracy in one's ability to predict the future.