Inner drive is a term used to describe the motivation and determination that comes from within. It is often associated with ambition, passion, and enthusiasm. The crossword solutions for the term inner drive are URGE (4 letters) and VIM (3 letters). URGE is defined as an intense desire or impulse, while VIM is defined as energy, enthusiasm, and vigor. Both words can be used to describe inner drive, as they both refer to a strong internal motivation.