"Watch out" is a phrasal verb predominantly used in informal contexts. It serves as a cautionary alert, advising attention to potential danger or an upcoming hazard. Commonly utilized in everyday conversation, it captures immediate, situational advice often aimed at ensuring safety, like in "Watch out for the slippery floor!" It might be used in a variety of settings such as driving, sports, or any context where there is a need to remain vigilant. In formal writing or speech, more precise or elaborate phrases like "be cautious" or "remain vigilant" may be used instead. Its usage is straightforward and easily underlines urgency or warning, making it a versatile and essential tool for quick communication.
B1
PreIntermediate
1. To be careful or alert to possible dangers or problems.
Watch out for cars when you cross the road.
You should watch out for pickpockets in crowded areas.