The crossword solutions for the term USE YOUR HEAD! are THINK, which is a five-letter word. Thinking is an important cognitive process that involves the use of our minds to consider and analyze information. It is a fundamental part of problem solving, decision making, and learning. Thinking can also be used to create new ideas and solutions. Therefore, the phrase USE YOUR HEAD! is a reminder to use our minds to THINK through situations and come up with the best possible solutions.