The term 'suit to the circumstances' can be summarized as adapting to the situation. This means that one should adjust their behavior or actions to fit the current environment. This could involve changing one's attitude, approach, or even the way they dress. The crossword solution for this term is 'ADAPT, ' which is a five-letter word meaning to make suitable or appropriate for a particular purpose or situation. In other words, it is to modify or change something to fit the current circumstances.