There are several synonyms for the word "alerted" that can be used to convey a similar message. Some of these synonyms include notified, warned, apprised, informed, cautioned, suggested, advised, and prompted. All of these words express the idea that someone has been given a warning or notification about a particular situation. Depending on the context, different synonyms may be more appropriate than others. For example, "cautioned" might be more appropriate for a dangerous situation, while "advised" might be better for a more general piece of information. No matter which synonym is used, the goal is to ensure that someone is aware of a situation and can take appropriate action if necessary.