"Leap the dark" can be a challenging phrase to define. It generally refers to taking a risk or facing the unknown with courage and determination. Some synonyms for this phrase might include taking a leap of faith, plunging into the abyss, or stepping into the unknown. Other related phrases might include taking a chance, embarking on an adventure, or venturing into the wilderness. Whatever words we use to describe this concept, the idea is the same: we must be willing to take risks and face our fears in order to truly live to the fullest.