Precautioned is commonly used to describe a situation where someone has been warned or advised to take care or be careful. There are a number of alternative synonyms that can be used to describe this scenario, which include 'advised', 'cautioned', 'notified', 'alerted', 'informed', 'apprised', and 'forewarned'. These words convey the idea that someone has been given a heads up or a reminder to be vigilant and mindful of potential risks or hazards. Using synonyms for precautioned can help to add variety to your writing and help to keep it interesting and engaging for the reader.