The term 'VITAL SPARK' can be broken down into two words, 'VITAL' and 'SPARK'. The crossword solution for the word 'VITAL' is LIFE, which means having or showing the capacity to live, grow, and develop. The crossword solution for the word 'SPARK' is an energetic or enthusiastic quality that motivates someone to action. Together, the term 'VITAL SPARK' refers to a LIFE force or energy that motivates someone to take action. It is often used to describe someone who is full of enthusiasm and energy.