The term 'NOT TO WORRY!' can be expressed in many different ways, as evidenced by the crossword solutions given. The five-letter solution, RELAX, implies that one should take a step back and not worry about the situation. IMOK, ITSOK, and ITSOKAY, all four and five letters respectively, are variations of the same sentiment, expressing that everything is okay and there is no need to worry. THATSOK and RESTEASY, both seven letters, further emphasize the idea that one should not worry and instead take a break from the situation. NOPROBLEM and DONTSWEATIT, both eight and eleven letters respectively, are more direct expressions of the sentiment, telling the person not to worry and that there is no problem. All of these solutions express the same sentiment of not worrying and taking a break from the situation.