The term 'stress (over)' can be summarized by the crossword solution 'FRET' which is a four letter word. FRET is an emotion or feeling of worry, anxiety, or unease, typically about an imminent event or something with an uncertain outcome. It is often associated with physical symptoms such as headaches, stomachaches, and insomnia. Stress is a common cause of fretting, and it can be caused by a variety of factors such as work, relationships, finances, and health.