The term 'LIKE A TOUGH TEACHER' can be summarized by the crossword solution 'STRICT', which is a 6-letter word. This term implies that someone is behaving in a manner similar to a tough teacher, meaning they are demanding and uncompromising. They may have high expectations and be unwilling to accept anything less than perfect. This type of behavior is often seen in teachers, but can also be seen in other roles such as parents, bosses, or coaches.