[adjective]Norwich welcomes careful drivers (= people who drive with care in order to avoid accidents)!Be careful with the glasses (= take care so that you don't break them).Be careful of/about the ice on the road.He's in a really foul temper so be careful (about/of) what you say to him.Be careful where you put that hot pan.Be careful to look both ways when you cross the road.Be careful carrying those heavy bags.(Be) careful (that) you don't fall.Michael is a very careful worker (= gives attention to detail).After careful (= detailed) consideration of your proposal, I regret to say that we are unable to accept it.(UK dated) People sometimes say Careful how you go when they say goodbye to someone.
CAREFUL
Meaning of CAREFUL in English
Cambridge English vocab. Кембриджский английский словарь. 2012