"Re-warning" refers to the act of repeating a warning or giving another warning to someone who has already been warned. There are various synonyms for the word "re-warning," including reiterating a warning, reminding someone again, issuing a second warning, repeating an advisory, cautioning anew, re-emphasizing a warning, and giving someone a heads-up again. Such synonyms can be used interchangeably in contexts where a warning needs to be reinforced or repeated for better comprehension or retention. The use of synonyms can help in ensuring that key information is adequately communicated, thus reducing the risk of mishaps, accidents, or other undesirable outcomes.