The crossword solution for the term 'cease to develop' is 'STAGNATE'. Stagnation is a state of inactivity or a period of no growth or development. It can be used to describe a person, a process, or an environment. In terms of a person, it can refer to a lack of progress or growth in their life. In terms of a process, it can refer to a lack of progress or development in a particular area. In terms of an environment, it can refer to a lack of change or progress in the environment.