Antonyms for "be witness" include ignore, overlook, misunderstand, disregard, and deny. When someone chooses to ignore what they see, they do not bear witness to it. Overlooking something means to miss it;thus, it cannot be witnessed. If someone misunderstands something, they are unable to bear witness to it accurately. Disregard means to pay no attention to something or to treat it with indifference. Finally, denying something means refusing to acknowledge its existence, making it impossible to bear witness to it. Overall, these antonyms reflect the different ways in which people can fail to bear witness to something, whether intentionally or not.