A group effort is a collaborative effort between multiple people to achieve a common goal. The term can be broken down into two crossword solutions: THERAPY (7 letters) and EXERT (5 letters). THERAPY is a form of treatment that helps people manage their mental health, while EXERT is the act of using physical or mental energy to do something. Together, these two words represent the idea of working together to accomplish something, which is the essence of a group effort.