Fore-warning refers to giving advance notice of something that may happen. The antonym for fore-warning would, therefore, be keeping someone in the dark or not giving any warning. It means refraining from communicating any information that could be useful to someone or withholding knowledge of anticipated danger. Other antonyms for fore-warning could include concealment, secrecy, and silence. If someone is unaware of an impending event or situation, they are vulnerable and may not be able to make informed decisions. Therefore, it's essential to provide fore-warning when necessary, especially when it concerns the safety and well-being of others.